mc dataset – Swinging Hotspot – interactive images

Dataset

[qwiz dataset=”dk MC dataset2″]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2103ef8c19f8b1″ question_number=”176″] Which of the following statements is valid regarding proteins that are translated on the rough endoplasmic reticulum?

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Cg==

[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

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[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|210304636904b1″ question_number=”177″] The model below depicts a cell membrane. What structures are labelled I, II, and III in the model?

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[c]IFBlcmlwaGVyYWwgcHJvdGVpbiwgZ2x5Y29wcm90ZWluLCBoeWRyb3BoaWxpYyBwaG9zcGhhdGUgaGVhZA==[Qq]

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2101e601b278b1″ question_number=”178″] Which of the following is a correct route for flow of materials in the endomembrane system?

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Cg==

[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2100f188d1f4b1″ question_number=”179″] Which of the following models best represents the arrangement of phospholipids in a cell membrane?

[c]IE E=[Qq]

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Cg==

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Cg==

[Qq]Cause when phospholipids into water get submerged,
A phospholipid bilayer structure will emerge
The tails hang together in a water free zone,
Hear their hydrophobic moan, “water leave me alone!”

While the heads are sticking out touching all those H₂Os
Tails in, heads out, it’s how every membrane goes
Tails in, heads out, in a cellular sphere,
It’s the bilayered basis of membranes everywhere.

[c]IEI=[Qq]

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Cg==

Q2F1c2Ugd2hlbiBwaG9zcGhvbGlwaWRzIGludG8gd2F0ZXIgZ2V0IHN1Ym1lcmdlZCw=[Qq]
A phospholipid bilayer structure will emerge
The tails hang together in a water free zone,
Hear their hydrophobic moan, “water leave me alone!”

[c]IEM=[Qq]

Cg==

[c]IEQ=[Qq]

Cg==

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20ffb98a989cb1″ question_number=”180″] Five sucrose-impermeable dialysis bags were filled with different concentrations of sucrose. Each bag was placed in a separate beaker that contained a 0.6 M sucrose solution. The bags were weighed every 10 minutes for 60 minutes. The results for each bag, DB1 through DB5, are shown in the graph below as percent mass change over time. Which lines in the graph represent dialysis bags that contain a hypertonic solution at 30 minutes?

[c]IERC Mg==[Qq]

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[c]IERCMw==[Qq]

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[c]IERCNA==[Qq]

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20fea9212968b1″ question_number=”181″] Tigers hunt by concealing themselves, then running and pouncing on their prey. Tigers become exhausted quickly after running short distances. Which of the following statements best explains why tigers tire quickly when running?

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20fdb4a848e4b1″ question_number=”182″] What statement best explains the function of ATP in cellular metabolism?

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[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

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Cg==

[Qq]

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[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20fcc72b8c0cb1″ question_number=”183″] Researchers measured oxygen consumption in harbor porpoises that were swimming at three different speeds for one minute and then stopped.

The results are shown in the diagram below. At the slow and medium speeds the oxygen consumption rates immediately fell when the porpoises stopped swimming. In contrast, the the oxygen consumption rate at fast speeds remained at a high level for a short time even after the porpoises stopped swimming.

Which of the following statements best describes what occurred while swimming at fast speeds that explains this difference?

[c]IEFuIG94eWdlbiBkZWJ0 IHdhcyBjcmVhdGVkLg==[Qq]

[f]IENvcnJlY3QuIEJlY2F1c2UgYW4gb3h5Z2VuIGRlYnQgd2FzIGNyZWF0ZWQsIHRoZSBwb3Jwb2lzZXMgbmVlZGVkIHRvIGNvbnRpbnVlIHRvIGNvbnN1bWUgaGlnaCBsZXZlbHMgb2Ygb3h5Z2VuLiBFc3NlbnRpYWxseSwgdGhlIHBvcnBvaXNlcyB3ZXJlIGJyZWF0aGluZyBoYXJkIGFmdGVyIGRvaW5nIGhlYXZ5IGV4ZXJjaXNlLCBqdXN0IGFzIHlvdSBvciBJIHdvdWxkIGRvLg==[Qq]

[c]IFRoZSBlbGVjdHJvbiB0cmFuc3BvcnQgc3lzdGVtIGFjY2VsZXJhdGVkLg==[Qq]

[f]IE5vLiBBcyBsb25nIGFzIGtleSB2YXJpYWJsZXMgc3VjaCBhcyB0ZW1wZXJhdHVyZSwgZnVlbCBzdXBwbHksIGFuZCBveHlnZW4gbGV2ZWxzIGFyZSBoZWxkIGNvbnN0YW50LCB0aGUgZWxlY3Ryb24gdHJhbnNwb3J0IHN5c3RlbSBvcGVyYXRlcyBhdCBwcmV0dHkgbXVjaCB0aGUgc2FtZSBsZXZlbCYjODIzMDtBbmQgdGhhdCBpcyBhIGh1Z2UgaGludCBhcyB0byB3aGF0IHRoZSBjb3JyZWN0IGNob2ljZSBpcywgc28gbm90aWNlIGl0IG5vdywgYW5kIHJlbWVtYmVyIGl0IGZvciB0aGUgbmV4dCB0aW1lIHlvdSBzZWUgdGhpcyBxdWVzdGlvbi4=[Qq]

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20fbd506b76cb1″ question_number=”184″] The model below represents the link reaction and the Krebs cycle.

In the model, the letters W, X, Y and Z represent which molecules?

[c]IGNhcmJvbiBkaW94aWRlLCBhY2V0eWwgQ29BLCBBRFAsIHB5cnV2YXRl[Qq]

[f]IE5vLiBMb29rIGNsb3NlbHkgYXQgdGhlIGRpYWdyYW0gYW5kIGZvbGxvdyB0aGUgYXJyb3dzIGFzIHlvdSBjb25zaWRlciB0aGVzZSBoaW50cy4gMSkgUHlydXZhdGUgaXMgdGhlIGtleSBpbnB1dCBmb3IgdGhlIGxpbmsgcmVhY3Rpb24sIHdoaWNoIHByZWNlZGVzIHRoZSBLcmVicyBjeWNsZS4gMikgQWNldHlsIENvQSBpcyB0aGUga2V5IGlucHV0IGZvciB0aGUgS3JlYnMgY3ljbGUuIE5vdyB5b3UgZmlndXJlIG91dCB0aGUgcmVzdC4=[Qq]

[c]IEFjZXR5bCBDb0EsIHB5cnV2YXRlLCBjYXJib24gZGlveGlkZSwgQURQ[Qq]

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[c]IFB5cnV2YXRlLCBhY2V0eWwgQ29B LCBjYXJib24gZGlveGlkZSwgQURQ[Qq]

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[c]IEFEUCwgY2FyYm9uIGRpb3hpZGUsIGFjZXR5bCBDb0EsIHB5cnV2YXRl[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20fae535eeb0b1″ question_number=”185″] The oxygen used in cellular respiration is directly involved in

[c]IGdseWNvbHlzaXM=[Qq]

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Cg==

[Qq]

[c]IHRoZSBLcmVicyBjeWNsZQ==[Qq]

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Cg==

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Cg==

[Qq]

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Cg==

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Cg==

[Qq]

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VGhlIG1pdG9jaG9uZHJpYWwgZWxlY3Ryb24gdHJhbnNwb3J0IGNoYWluLA==
[Qq] Uses ‘lectron energy for pumping protons,
From the mitochondrial matrix to the intermembrane space.
Increasing proton concentration in that place.
The only way the protons can escape.
Is through a channel and an enzyme ATP synthase.
Which uses diffusing protons’ kinetic energy
To make ATP from ADP and P!

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f9f3111a10b1″ question_number=”186″] During cellular respiration, what is the function of the mitochondrion?

[c]IEh5ZHJvbHl6aW5nIEFUUA==[Qq]

[f]IE5vLiBDZWxsdWxhciByZXNwaXJhdGlvbiBpcyBhYm91dCBzeW50aGVzaXppbmcgQVRQLCBub3QgaHlkcm9seXppbmcgaXQuIEhlcmUmIzgyMTc7cyBhIGhpbnQuIExvb2sgYXQgdGhlIGRpYWdyYW0gYmVsb3cuIEV2ZXJ5dGhpbmcgYWZ0ZXIgVyBvY2N1cnMgaW4gdGhlIG1pdG9jaG9uZHJpYS4gV2hhdCBpcyBXLCBhbmQgd2hhdCBoYXBwZW5zIHRvIFcgZHVyaW5nIHRoZSBsaW5rIHJlYWN0aW9uIGFuZCB0aGUgS3JlYnMgY3ljbGU/

Cg==

[Qq]

[c]IE94aWRpemluZyB3YXRlciB0byBveHlnZW4=[Qq]

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Cg==

[Qq]

[c]IE94aWRpemluZyBweXJ1 dmF0ZSBjb21wbGV0ZWx5[Qq]

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Cg==

[Qq]

[c]IENvbnZlcnRpbmcgZ2x1Y29zZSBpbnRvIHB5cnV2YXRlLg==[Qq]

[f]IE5vLiBUaGF0JiM4MjE3O3Mgd2hhdCBoYXBwZW5zIGR1cmluZyBnbHljb2x5c2lzLCB3aGljaCBvY2N1cnMgaW4gdGhlIGN5dG9wbGFzbSwgbm90IHRoZSBtaXRvY2hvbmRyaWEuIEhlcmUmIzgyMTc7cyBhIGhpbnQuIExvb2sgYXQgdGhlIGRpYWdyYW0gYmVsb3cuIEV2ZXJ5dGhpbmcgYWZ0ZXIgVyBvY2N1cnMgaW4gdGhlIG1pdG9jaG9uZHJpYS5XaGF0IGlzIFcsIGFuZCB3aGF0IGhhcHBlbnMgdG8gVyBkdXJpbmcgdGhlIGxpbmsgcmVhY3Rpb24gYW5kIHRoZSBLcmVicyBjeWNsZT8=

Cg==

[Qq]

[c]IEdlbmVyYXRpbmcgTkFEUA==^Kw==IGZyb20gTkFEUEg=[Qq]

[f]IE5vLiBHZW5lcmF0aW5nIE5BRFA=^Kw==IGZyb20gTkFEUEggaGFwcGVucyBkdXJpbmcgdGhlIENhbHZpbiBjeWNsZSwgd2l0aCBOQURQSCYjODIxNztzIHJlZHVjaW5nIHBvd2VyIHVzZWQgdG8gY3JlYXRlIGNhcmJvaHlkcmF0ZXMgZnJvbSBjYXJib24gZGlveGlkZS4gSGVyZSYjODIxNztzIGEgaGludC4gTG9vayBhdCB0aGUgZGlhZ3JhbSBiZWxvdy4gRXZlcnl0aGluZyBhZnRlciBXIG9jY3VycyBpbiB0aGUgbWl0b2Nob25kcmlhLldoYXQgaXMgVywgYW5kIHdoYXQgaGFwcGVucyB0byBXIGR1cmluZyB0aGUgbGluayByZWFjdGlvbiBhbmQgdGhlIEtyZWJzIGN5Y2xlPw==

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f8f09ff234b1″ question_number=”187″] The body temperature of small ectothermic animals, such as a small fish, is dependent on the temperature of their environment. Large ectothermic animals, like sea turtles, can retain their body heat to remain warmer than their environment. Scientists believe large aquatic dinosaurs were also able to retain their body heat. Which of the following reasons best explains why large ectothermic animals can retain heat?

[c]IExhcmdlciBzdXJmYWNlL3ZvbHVtZSByYXRpbw==[Qq]

[f]IE5vLiBUaGluayBvZiB0aGUgZm9ybXVsYXMgZm9yIHRoZSBzdXJmYWNlIGFyZWEgYW5kIHRoZSB2b2x1bWUgb2YgYSBjdWJlLiBTdXJmYWNlIGFyZWEgaXMgKHNpZGUgKiA2KQ==^Mg==LiBWb2x1bWUgaXMgc2lkZQ==^Mw==LiBCZWNhdXNlIHN1cmZhY2UgYXJlYSBpcyBhIHNxdWFyZSBmdW5jdGlvbiBhbmQgdm9sdW1lIGlzIGEgY3ViaWMgZnVuY3Rpb24sIHRoZW4gdGhlIGxhcmdlciBhIGN1YmUgaXMsIHRoZSA=[Qq]less surface area it has relative to its volume, as you can see in the graph below.

What’s true of cubes is true of animals (only the calculations for finding area and volume are more complicated. Use that as a hint to think about what’s going on with larger organisms, and how that might relate to these organisms’ ability (or inability) to diffuse heat out of their bodies.

[c]IFNtYWxsZXIgc3VyZmFj ZS92b2x1bWUgcmF0aW8=[Qq]

[f]IFllcy4gQmVjYXVzZSBzdXJmYWNlIGFyZWEgaXMgYSBzcXVhcmUgZnVuY3Rpb24gYW5kIHZvbHVtZSBpcyBhIGN1YmljIGZ1bmN0aW9uLCB0aGVuIHRoZSBsYXJnZXIgYW4gb3JnYW5pc20gaXMgdGhlIGxlc3Mgc3VyZmFjZSBhcmVhIGl0IGhhcyByZWxhdGl2ZSB0byBpdHMgdm9sdW1lLiBUaGF0IG1lYW5zIHRoYXQgaXQmIzgyMTc7cyBtdWNoIGhhcmRlciBmb3IgbGFyZ2VyIGFuaW1hbHMgdG8gZGlmZnVzZSBoZWF0IG91dCBvZiB0aGVpciBib2RpZXMsIHdoaWNoIGV4cGxhaW5zIHdoeSBsYXJnZSBlY3RvdGhlcm1pYyBhbmltYWxzIGNhbiByZXRhaW4gaGVhdC4=[Qq]

[c]IEhpZ2hlciBtZXRhYm9saWMgcmF0ZSBwZXIgZ3JhbSBvZiBib2R5IG1hc3Mu[Qq]

[f]IE5vLiBUaGUgcmVsYXRpb25zaGlwIGFjdHVhbGx5IHJ1bnMgaW4gdGhlIG9wcG9zaXRlIGRpcmVjdGlvbiwgYXMgeW91IGNhbiBzZWUgaW4gdGhlIGdyYXBoIGJlbG93Lg==

Cg==

[Qq]The key to this question has more to do with surface area to volume relationships. Study the graph below, which shows the relationship between surface area and volume for a cube. What happens to an organism’s surface area to volume ratio as it increases in size, and how might that relate to an organism’s ability to diffuse heat out of its body?

[c]IExvd2VyIG1ldGFib2xpYyByYXRlIHBlciBncmFtIG9mIGJvZHkgbWFzcy4=[Qq]

[f]IE5vLiBXaGlsZSB5b3UgY2xlYXJseSB1bmRlcnN0YW5kIHRoZSByZWxhdGlvbnNoaXAgYmV0d2VlbiBib2R5IG1hc3MgYW5kIG1ldGFib2xpc20sIGl0JiM4MjE3O3MgaGFyZCB0byBzZWUgd2h5IGhhdmluZyBhIGxvd2VyIG1ldGFib2xpc20gd291bGQgbGVhZCBhIGxhcmdlIGVjdG90aGVybSB0byBoYXZlIGEgYmV0dGVyIGFiaWxpdHkgdG8gcmV0YWluIGl0cyBib2R5IGhlYXQuIEluIGZhY3QsIHlvdSBtaWdodCBleHBlY3QgaXQgdG8gYmUgdGhlIG9wcG9zaXRlOiBzaW5jZSB0aGUgbGFyZ2Ugb3JnYW5pc21zIGdlbmVyYXRlIGxlc3MgaGVhdC9ncmFtIG9mIGJvZHkgbWFzcywgdGhleSYjODIxNztkIGJlIGNvb2xlciwgbm90IHdhcm1lciwgdGhhbiBzbWFsbGVyIG9yZ2FuaXNtcy4gQnV0IHRoYXQmIzgyMTc7cyBub3QgdGhlIGNhc2Uu

Cg==

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f805774140b1″ question_number=”188″] The figure below represents a biochemical pathway in a cell. In the figure, the four compounds labelled I-IV are:

[c]IGZhdCwgQVRQLCB3YXRlciwgYW5kIGNhcmJvbiBkaW94aWRlIHJlc3BlY3RpdmVseS4=[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBZb3UmIzgyMTc7cmUgbG9va2luZyBhdCBjZWxsdWxhciByZXNwaXJhdGlvbi4gVGhlIGZpcnN0IGFycm93IG9uIHRoZSBmYXIgbGVmdCByZXByZXNlbnRzIGdseWNvbHlzaXMuIFdoYXQmIzgyMTc7cyB0aGUgaW5wdXQgZm9yIGdseWNvbHlzaXM/[Qq]

[c]IGdsdWNvc2UsIGNpdHJhdGUsIGFjZXR5bCBDb0EsIGFuZCBsYWN0YXRlIHJlc3BlY3RpdmVseS4=[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBZb3UmIzgyMTc7cmUgbG9va2luZyBhdCBjZWxsdWxhciByZXNwaXJhdGlvbi4gWW91JiM4MjE3O3ZlIGNvcnJlY3RseSBmaWd1cmVkIG91dCB0aGF0IHRoZSBmaXJzdCBhcnJvdyBvbiB0aGUgZmFyIGxlZnQgcmVwcmVzZW50cyBnbHljb2x5c2lzLCBhbmQgdGhhdCB0aGUgc3RhcnRpbmcgY29tcG91bmQgaXMgZ2x1Y29zZS4gQXQgdGhlIGVuZCBvZiBnbHljb2x5c2lzLCB5b3UgZ2V0IHR3bywgdGhyZWUtY2FyYm9uIG1vbGVjdWxlcy4gV2hhdCBpcyB0aGF0IG1vbGVjdWxlIGNhbGxlZD8=[Qq]

[c]IGdsdWNvc2UsIHB5cnV2YXRlLCBsYWN0YXRlLC BhbmQgYWNldHlsIENvQSByZXNwZWN0aXZlbHku[Qq]

[f]IEV4Y2VsbGVudC4gR2x1Y29zZSBpcyBJLCBweXJ1dmF0ZSBpcyBJSSwgbGFjdGF0ZSBpcyBJSUksIGFuZCBhY2V0eWwgQ29BIGlzIElWLg==[Qq]

[c]IHN0YXJjaCwgcHlydXZhdGUsIGNhcmJvbiBkaW94aWRlLCBhbmQgYWNldHlsIENvQSByZXNwZWN0aXZlbHku[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f6f761ddf0b1″ question_number=”189″] In a human cell, where does the ATP synthase directly get energy to make ATP?

[c]IFN1bmxpZ2h0[Qq]

[f]IE5vLiBUaGF0IHdvdWxkIGJlIHRydWUgb2YgdGhlIGxpZ2h0IHJlYWN0aW9ucyBvZiBwaG90b3N5bnRoZXNpcywgYnV0IG5vdCBmb3IgY2VsbHVsYXIgcmVzcGlyYXRpb24uIFRha2UgYSBsb29rIGF0IHRoZSBjaG9ydXMgdG8gb25lIG9mIG15IHNvbmdzLCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIGl0IG91dC4=

Cg==

[c]IE94aWRhdGlvbiBvZiBnbHVjb3Nl[Qq]

[f]IE5vLiBUaGUgcXVlc3Rpb24gaXMgYXNraW5nIGFib3V0IHRoZSA=ZGlyZWN0IHNvdXJjZSBvZiBlbmVyZ3kgZm9yIG1ha2luZyBBVFAuIEdsdWNvc2UsIHdoaWNoIHByb3ZpZGVzIHRoZSBjaGVtaWNhbCBlbmVyZ3kgdG8gcG93ZXIgY2VsbHVsYXIgcmVzcGlyYXRpb24sIGlzIHRoZSA=aW5kaXJlY3Q=IHNvdXJjZSBvZiB0aGlzIGVuZXJneS4gVGFrZSBhIGxvb2sgYXQgdGhlIGNob3J1cyB0byBvbmUgb2YgbXkgc29uZ3MsIGFuZCBzZWUgaWYgeW91IGNhbiBmaWd1cmUgaXQgb3V0Lg==

[Qq]

The mitochondrial electron transport chain,
Uses ‘lectron energy for pumping protons,
From the mitochondrial matrix to the intermembrane space.
Increasing proton concentration in that place.
The only way the protons can escape.
Is through a channel and an enzyme ATP synthase.
Which uses diffusing protons’ kinetic energy
To make ATP from ADP and P!

[c]IFJlZHVjdGlvbiBvZiBveHlnZW4=[Qq]

[f]IE5vLiBSZWR1Y3Rpb24gb2Ygb3h5Z2VuIGhhcHBlbnMgd2hlbiBveHlnZW4gYWNjZXB0cyBlbGVjdHJvbnMgYXQgdGhlIGVuZCBvZiB0aGUgbWl0b2Nob25kcmlhbCBlbGVjdHJvbiB0cmFuc3BvcnQgY2hhaW4sIGFuZCB0aGF0IGlzIG5lY2Vzc2FyeSBmb3IgQVRQIGNyZWF0aW9uLCBidXQgaXQmIzgyMTc7cyBub3QgdGhlIGRpcmVjdCBlbmVyZ3kgc291cmNlIHRoYXQmIzgyMTc7cyBwb3dlcmluZyBBVFAgc3ludGhlc2lzLiBUYWtlIGEgbG9vayBhdCB0aGUgY2hvcnVzIHRvIG9uZSBvZiBteSBzb25ncywgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBpdCBvdXQu

Cg==

[c]IEZsb3cg b2YgSA==^Kw==IGFjcm9zcyB0aGUgaW5uZXIgbWl0b2Nob25kcmlhbCBtZW1icmFuZQ==[Qq]

[f]IEV4Y2VsbGVudC4gSSB0cmllZCB0byBjYXB0dXJlIHRoaXMgaW4gdGhlIGNob3J1cyB0byBteSA=RWxlY3Ryb24gVHJhbnNwb3J0IENoYWluIHNvbmcu

Cg==

[Qq]The mitochondrial electron transport chain,
Uses ‘lectron energy for pumping protons,
From the mitochondrial matrix to the intermembrane space.
Increasing proton concentration in that place.
The only way the protons can escape.
Is through a channel and an enzyme ATP synthase.
Which uses diffusing protons’ kinetic energy
To make ATP from ADP and P!

[c]IE1vdmVtZW50IG9mIGVsZWN0cm9ucyBhY3Jvc3MgdGhlIGVsZWN0cm9uIHRyYW5zcG9ydCBjaGFpbg==[Qq]

[f]IE5vLiBNb3ZlbWVudCBvZiBlbGVjdHJvbnMgYWxvbmcgdGhlIG1pdG9jaG9uZHJpYWwgZWxlY3Ryb24gdHJhbnNwb3J0IGNoYWluIGlzIGFic29sdXRlbHkgbmVjZXNzYXJ5IGZvciBBVFAgcHJvZHVjdGlvbiwgYnV0IGl0JiM4MjE3O3Mgbm90IHRoZSBkaXJlY3Qgc291cmNlIG9mIGVuZXJneSBmb3IgQVRQIHN5bnRoZXNpcy4gVGFrZSBhIGxvb2sgYXQgdGhlIGNob3J1cyB0byBvbmUgb2YgbXkgc29uZ3MsIGFuZCBzZWUgaWYgeW91IGNhbiBmaWd1cmUgaXQgb3V0Lg==

Cg==

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f5e94c7aa0b1″ question_number=”190″] Basalt is formed over days or weeks when lava cools and solidifies on the Earth’s surface after a volcanic eruption. Sometimes well-preserved fossils have been found in volcanic ash, from the same eruption, deposited near the basalt. Which of the following statements explains why basalt near a fossil site can be used to date the fossils?

[c]IEFuIGluZGV4IGZvc3NpbCBtYXkgYmUgY29udGFpbmVkIGluIHRoZSBiYXNhbHQu[Qq]

[f]IE5vLiBCYXNhbHQgaXMgYSB2b2xjYW5pYyByb2NrLCBmb3JtZWQgZnJvbSBsYXZhLCB3aGljaCB3b3VsZCBkZXN0cm95IGFueSBmb3NzaWxzLiBBcyBpcyBzdGF0ZWQgaW4gdGhlIHF1ZXN0aW9uLCB0aGUgZm9zc2lscyBtaWdodCBiZSBmb3VuZCBpbiB2b2xjYW5pYyBhc2gsIGRlcG9zaXRlZCBuZWFyIHRoZSBiYXNhbHQuIFRha2UgYW5vdGhlciBsb29rIGF0IHRoZXNlIGNob2ljZXMsIGFuZCBzZWUgaWYgeW91IGNhbiBpZGVudGlmeSBvbmUgdGhhdCB3b3VsZCBoZWxwIHlvdSBkZXRlcm1pbmUgaG93IG9sZCB0aGUgZm9zc2lscyBhcmUu[Qq]

[c]IE9yZ2FuaWMgcmVtYWlucyBhcmUgYmFrZWQgYW5kIHByZXNlcnZlZCBpbiB0aGUgYmFzYWx0Lg==[Qq]

[f]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[Qq]

[c]IEhpc3RvcmljYWwgZGF0YSBjb250YWlucyB0aGUgZGF0ZXMgb2Ygdm9sY2FuaWMgZXJ1cHRpb25zLg==[Qq]

[f]IE5vLiBIaXN0b3JpY2FsIHJlY29yZHMgZGF0ZSBiYWNrIG9ubHkgYSBmZXcgdGhvdXNhbmRzIG9mIHllYXJzIGF0IG1vc3QuIFNlZSBpZiB5b3UgY2FuIHRoaW5rIG9mIGFub3RoZXIgd2F5IGluIHdoaWNoIGJhc2FsdCBjYW4gYmUgdXNlZCB0byBkYXRlIHRoZSBmb3NzaWxzLg==[Qq]

[c]IFJhZGlvYWN0aXZlIGVsZW1lbnRzIGluIHRoZSBi YXNhbHQgY2FuIGJlIGRhdGVkIGFjY3VyYXRlbHku[Qq]

[f]IFllcy4gQnkgdXNpbmcgcmFkaW9hY3RpdmUgZGF0aW5nLCB0aGUgYWdlIG9mIHRoZSB2b2xjYW5pYyBiYXNhbHQgdGhhdCYjODIxNztzIG5lYXIgdGhlIGZvc3NpbHMgY2FuIGJlIGRldGVybWluZWQuIFRoYXQsIGluIHR1cm4sIGFsbG93cyB5b3UgdG8gZGV0ZXJtaW5lIGFuIGFnZSBmb3IgdGhlIGZvc3NpbHMu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f4c896b830b1″ question_number=”191″] Which of the following is true about mitochondrial DNA?

[c]IEl0IGlzIGluc2VydGVkIGludG8gdGhlIFggY2hyb21vc29tZS4=[Qq]

[f]IE5vLiBNaXRvY2hvbmRyaWFsIEROQSBpcyBleGFjdGx5IHdoYXQgaXQgc291bmRzIGxpa2U6IGEgbG9vcCBvZiBETkEgd2l0aGluIHRoZSBtaXRvY2hvbmRyaWEgb2YgYWxsIG9mIGFuIG9yZ2FuaXNtJiM4MjE3O3MgY2VsbHMuIEl0IHdvbiYjODIxNzt0IGJlIGluc2VydGVkIGludG8gdGhlIFggY2hyb21vc29tZSAob3IgYW55IG90aGVyIGNocm9tb3NvbWUpLg==[Qq]

[c]IEl0IGlzIGluaGVyaXRlZCBvbmx5IG Zyb20gdGhlIGZlbWFsZSBwYXJlbnQu[Qq]

[f]IENvcnJlY3QuIFdoZW4gYSBzcGVybSBmZXJ0aWxpemVzIGFuIGVnZywgb25seSB0aGUgc3Blcm0mIzgyMTc7cyBudWNsZXVzIGlzIGFsbG93ZWQgdG8gZW50ZXIuIFRoZSBzcGVybSYjODIxNztzIG1pdG9jaG9uZHJpYSwgbG9jYXRlZCBhdCB0aGUgYmFzZSBvZiB0aGUgZmxhZ2VsbHVtLCBhcmUgbGVmdCBiZWhpbmQuIENvbnNlcXVlbnRseSwgYWxsIG9mIGFuIGFuaW1hbCYjODIxNztzIG1pdG9jaG9uZHJpYSBhcmUgZnJvbSBpdHMgbW90aGVyLg==[Qq]

[c]IEl0IGV2b2x2ZXMgc2xvd2VyIHRoYW4gdGhlIGdlbmVzIGluIHRoZSBudWNsZXVzLg==[Qq]

[f]IE5vLiBUaGUgcmF0ZSBvZiBtaXRvY2hvbmRyaWFsIEROQSBldm9sdXRpb24sIGNvbXBhcmVkIHRvIEROQSBpbiB0aGUgY2VsbCYjODIxNztzIG51Y2xldXMsIGhhcyB0d28gZGltZW5zaW9ucy4gT24gdGhlIG9uZSBoYW5kLCBtaXRvY2hvbmRyaWFsIEROQSBpc24mIzgyMTc7dCBzdWJqZWN0IHRvIHRoZSBnZW5ldGljIGNvbWJpbmF0aW9uIHRoYXQgaGFwcGVucyBkdXJpbmcgbWVpb3Npcywgd2hpY2ggbWFrZXMgaXQgbW9yZSBzdGFibGUgdGhhbiBudWNsZWFyIEROQS4gT24gdGhlIG90aGVyIGhhbmQsIG1pdG9jaG9uZHJpYWwgRE5BIG11dGF0ZXMgZmFzdGVyIHRoYW4gbnVjbGVhciBETkEuIEluIGFueSBjYXNlLCBvbmUgb2YgdGhlIG90aGVyIGNob2ljZXMgaW4gdGhpcyBzZXQgaXMgY2xlYXJseSB0cnVlLg==[Qq]

[c]IEl0IHdhcyBkZXJpdmVkIGZyb20gdGhlIGdsb2JpbiBnZW5lcyBhcyBhbiBleHRyYSBjb3B5Lg==[Qq]

[f]IE5vLiBHbG9iaW5zIGFyZSBwcm90ZWlucyBpbnZvbHZlZCBpbiBiaW5kaW5nIHdpdGggb3IgdHJhbnNwb3J0aW5nIG94eWdlbi4gVGhlcmUgaGFzIGJlZW4gZHVwbGljYXRpb24gb2YgZ2xvYmluIGdlbmVzIHRocm91Z2hvdXQgb3VyIGdlbm9tZSwgcmVzdWx0aW5nIGluIHNldmVyYWwgdHlwZXMgb2YgaGVtb2dsb2JpbiwgYW5kIG90aGVyIHByb3RlaW5zIHN1Y2ggYXMgbXlvZ2xvYmluIGFuZCBuZXVyb2dsb2Jpbi4gQnV0IG5vbmUgb2YgdGhvc2UgcHJvdGVpbnMgYXJlIGNvbm5lY3RlZCB0byBtaXRvY2hvbmRyaWFsIEROQS4=[Qq]

[c]IEl0IGZpcnN0IGFwcGVhcmVkIGluIGh1bWFucyBhbmQgaXMgbm90IGZvdW5kIGluIG90aGVyIG1lbWJlcnMgb2YgdGhlIEFuaW1hbGlhIGtpbmdkb20u[Qq]

[f]IE5vLiBNaXRvY2hvbmRyaWFsIEROQSBpcyBub3Qgb25seSBwcmVzZW50IGluIGFsbCBhbmltYWxzLCBidXQgaXQmIzgyMTc7cyBwcmVzZW50IGluIGFueSBvcmdhbmlzbSB0aGF0IGhhcyBtaXRvY2hvbmRyaWEgKG1lYW5pbmcgYWxsIGV1a2FyeW90ZXMpLg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f3db19fb58b1″ question_number=”192″] Which of the following best describes the evolutionary role of gene duplication?

[c]IEJlY2F1c2Ugb2YgZ2VuZSBkdXBsaWNhdGlvbiwgdGhlIGdlbmV0aWMgY29kZSBjYW4gYmUgbW9yZSBmbGV4aWJsZS4=[Qq]

[f]IE5vLiBHZW5lIGR1cGxpY2F0aW9uIGlzIGV4YWN0bHkgd2hhdCBpdCBzb3VuZHMgbGlrZTogdGhlIGNvcHlpbmcgb2YgZ2VuZSBzbyB0aGF0IGluc3RlYWQgb2YgdGhlcmUgYmVpbmcgb25lIGNvcHksIHRoZXJlIGFyZSBtdWx0aXBsZSBjb3BpZXMu

Cg==

[Qq]Gene duplication has no effect on the genetic code (the way that codon sequences are translated into protein). But they do play a big role in evolution. Take a look at the other choices, and see if one of them looks like it could help a population evolve.

[c]IEZld2VyIGdlbmUgY29waWVzIGxlYWRzIHRvIGZhc3RlciBETkEgcmVwbGljYXRpb24sIGFuZCBmYXN0ZXIgRE5BIHJlcGxpY2F0aW9uIGFsbG93cyBhIHBvcHVsYXRpb24gdG8gZXZvbHZlIG1vdmUgcXVpY2tseS4=[Qq]

[f]IE5vLiBBcyB5b3UgY2FuIHNlZSBiZWxvdywgZ2VuZSBkdXBsaWNhdGlvbiBsZWFkcyB0byA=bW9yZQ==IGdlbmUgY29waWVzLCBub3QgZmV3ZXIu

Cg==

[Qq]

Take a look at the other choices, and see if one of them indicates a process that could help a population evolve.

[c]IER1cGxpY2F0aW9uIGNyZWF0ZXMgaW50cm9ucywgYW5kIGludHJvbnMgYWxsb3cgZm9yIHRoZSBnZW5lIHNodWZmbGluZyB0aGF0IHByb21vdGVzIHBoZW5vdHlwaWMgdmFyaWF0aW9uLg==[Qq]

[f]IE5vLiBXaGlsZSB0aGUgc2Vjb25kIHBhcnQgb2YgdGhpcyBzdGF0ZW1lbnQgaXMgdHJ1ZSwgdGhlIGZpcnN0IGlzIGluY29ycmVjdC4gR2VuZSBkdXBsaWNhdGlvbiBpcyBleGFjdGx5IHdoYXQgaXQgc291bmRzIGxpa2U6IHRoZSBjb3B5aW5nIG9mIGdlbmUgc28gdGhhdCBpbnN0ZWFkIG9mIHRoZXJlIGJlaW5nIG9uZSBjb3B5LCB0aGVyZSBhcmUgbXVsdGlwbGUgY29waWVzLg==

Cg==

[Qq]Take a look at the other choices, and see if one of them looks like it could help a population evolve.

[c]IER1cGxpY2F0aW9uIG9mIGdlbmVzIGNoYW5nZXMgdGhlaXIgcG9zaXRpb24gaW4gdGhlIGdlbm9tZSwgYW5kIHRoYXQgbGVhZHMgdG8gY2hhbmdlcyBpbiBnZW5lIGV4cHJlc3Npb24u[Qq]

[f]IE5vLCBidXQgeW91IGNob3NlIHRoZSBzZWNvbmQgYmVzdCBjaG9pY2UuIEl0IHNvdW5kcyBsaWtlIHlvdSB3ZXJlIHRoaW5raW5nIG9mIHdoYXQgaGFwcGVucyB3aXRoIHJlcGxpY2F0aXZlIHRyYW5zcG9zaXRpb24sIHdoZXJlIGEgdHJhbnNwb3NvbiAoYSBtb2JpbGUgRE5BIGVsZW1lbnQpIG1ha2VzIGEgY29weSBvZiBpdHNlbGYgdGhhdCBpbnNlcnRzIHNvbWV3aGVyZSBlbHNlIGluIHRoZSBnZW5vbWUuIFRoaXMgY2FuIGVmZmVjdCBleHByZXNzaW9uIG9mIGdlbmVzLCBlc3BlY2lhbGx5IGlmIHRoZSB0cmFuc3Bvc29uIGRpc3J1cHRzIGFub3RoZXIgZ2VuZSYjODIxNztzIHByb21vdGVyLg==

Cg==

R2VuZSBkdXBsaWNhdGlvbiBpcyBleGFjdGx5IHdoYXQgaXQgc291bmRzIGxpa2U6IHRoZSBjb3B5aW5nIG9mIGdlbmUgc28gdGhhdCBpbnN0ZWFkIG9mIHRoZXJlIGJlaW5nIG9uZSBjb3B5LCB0aGVyZSBhcmUgbXVsdGlwbGUgY29waWVzLg==

Cg==

[Qq]

Take a look at the other choices, and see if one of them looks like it could help a population evolve.

[c]IEFuIGV4dHJhIGdlbmUgY29weSBjYW4gdW5kZXJnbyBhZGFwdGl2ZSBjaGFuZ2VzIHdo aWxlIHRoZSBmaXJzdCBjb3B5IHBlcmZvcm1zIGl0cyBvcmlnaW5hbCBmdW5jdGlvbi4=[Qq]

[f]IE5pY2Ugam9iLiBUaGUgYmVuZWZpdCBvZiBnZW5lIGR1cGxpY2F0aW9uIGlzIHRoYXQgaXQgcHJvdmlkZXMgYSBtZWNoYW5pc20gYnkgd2hpY2ggYSBnZW5lIHBvb2wgY2FuIGNyZWF0ZSBnZW5lcyB0aGF0IGNvZGUgZm9yIG5ldyBhZGFwdGl2ZSB0cmFpdHMsIHdoaWxlIG1haW50YWluaW5nIHRoZSBvcmlnaW5hbCBmdW5jdGlvbiBvZiB0aGUgZHVwbGljYXRlZCBnZW5lLg==

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f2ed9d3e80b1″ question_number=”193″] The figure below represents the fossils found in different rock layers at a specific site. Which of the following conclusions is supported by the information in the figure?

[c]IEZvc3NpbCBBIGlzIGFib3V0IDUgbWlsbGlvbiB5ZWFycyBvbGQu[Qq]

[f]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[Qq]

[c]IEZvc3NpbHMgQSBhbmQgQyBhcmUgY2xvc2VseSByZWxhdGVkLg==[Qq]

[f]IE5vLiBGb3NzaWxzIEEgYW5kIEMgYXJlIGluIHRoZSBzYW1lIGxheWVyLCBidXQgYWxsIHRoYXQgdGVsbHMgeW91IGlzIHRoYXQgdGhleSBsaXZlZCBhdCB0aGUgc2FtZSB0aW1lLg==[Qq]

[c]IEZvc3NpbCBCIGlzIGV4dGluY3Qu[Qq]

[f]IE5vdCBuZWNlc3NhcmlseS4gSXQmIzgyMTc7cyBjb21wbGV0ZWx5IHBvc3NpYmxlIHRoYXQgdGhlIG9yZ2FuaXNtIHRoYXQgd2FzIGZvc3NpbGl6ZWQgdG8gY3JlYXRlIGZvc3NpbCBCIGlzIHBhcnQgb2YgYSBzcGVjaWVzIHRoYXQgaXMgc3RpbGwgYWxpdmUuIFRoZXJlIGFyZSBzcGVjaWVzLCBsaWtlIHRoZSBmYW1vdXMgQ29lbGFjYW50aCAoc2hvd24gYmVsb3cpLCB0aGF0IGFyZSBib3RoIGxpdmluZyB0b2RheSBhbmQgcGFydCBvZiB0aGUgZm9zc2lsIHJlY29yZCBmcm9tIDM2MCBtaWxsaW9uIHllYXJzIGFnby4=

Cg==

[Qq]

[c]IEZvc3NpbCBEIGlzIHRoZSB5b3 VuZ2VzdCBmb3NzaWwgc2hvd24u[Qq]

[f]IFllcy4gVGhlIGtleSBwcmluY2lwbGUgaGVyZSBpcyB0aGUgaWRlYSBvZiA=c3VwZXJwb3NpdGlvbg==LiBGb3NzaWxzIGluIGhpZ2hlciBsYXllcnMgYXJlIGxhaWQgZG93biBhYm92ZSB0aGUgZm9zc2lscyBpbiBsb3dlciBsYXllcnMsIGFuZCBhcmUgdGhlcmVmb3JlIHlvdW5nZXIu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f1efd42e6cb1″ question_number=”194″] The figure below represents the fossils found in different rock layers at a specific site.

Scientists observed that fossils C and D both have similar, limb-like appendages. If later work shows these structures are analogous, rather than homologous, then one could expect that the living organisms that formed these fossils would have had similar

[c]IGFtaW5vIGFjaWQgc2VxdWVuY2VzLg==[Qq]

[f]IE5vLiBUaGUga2V5IHRoaW5nIHRvIGZvY3VzIG9uIGhlcmUgaXMgdGhhdCB0aGVzZSBsaW1iLWxpa2UgYXBwZW5kYWdlcyBhcmUgYW5hbG9nb3VzLiBUaGF0IG1lYW5zIHRoYXQgdGhleSBkb24mIzgyMTc7dCByZXByZXNlbnQgY29tbW9uIGFuY2VzdHJ5ICh3aGljaCB3b3VsZCBiZSBzaG93biBieSBzaGFyZWQgYW1pbm8gYWNpZCBzZXF1ZW5jZXMpLCBidXQgcmF0aGVyIGNvbnZlcmdlbnQgZXZvbHV0aW9uIChzdWNoIGFzIHRoZSBzaW1pbGFyLCBzdHJlYW1saW5lZCBmb3JtcyBvZiBzaGFya3MgYW5kIGRvbHBoaW5zKS4=

Cg==Cg==[Qq]

Look at the choices, and see if there’s one that’s more related to the idea of convergent evolution.

[c]IEROQSBzZXF1ZW5jZXM=[Qq]

[f]IE5vLiBUaGUga2V5IHRoaW5nIHRvIGZvY3VzIG9uIGhlcmUgaXMgdGhhdCB0aGVzZSBsaW1iLWxpa2UgYXBwZW5kYWdlcyBhcmUgYW5hbG9nb3VzLiBUaGF0IG1lYW5zIHRoYXQgdGhleSBkb24mIzgyMTc7dCByZXByZXNlbnQgY29tbW9uIGFuY2VzdHJ5ICh3aGljaCB3b3VsZCBiZSBzaG93biBieSBzaGFyZWQgRE5BIHNlcXVlbmNlcyksIGJ1dCByYXRoZXIgY29udmVyZ2VudCBldm9sdXRpb24gKHN1Y2ggYXMgdGhlIHNpbWlsYXIsIHN0cmVhbWxpbmVkIGZvcm1zIG9mIHNoYXJrcyBhbmQgZG9scGhpbnMpLg==

Cg==Cg==[Qq]

Look at the choices, and see if there’s one that’s more related to the idea of convergent evolution.

[c]IFJOQSBzZXF1ZW5jZXM=[Qq]

[f]IE5vLiBUaGUga2V5IHRoaW5nIHRvIGZvY3VzIG9uIGhlcmUgaXMgdGhhdCB0aGVzZSBsaW1iLWxpa2UgYXBwZW5kYWdlcyBhcmUgYW5hbG9nb3VzLiBUaGF0IG1lYW5zIHRoYXQgdGhleSBkb24mIzgyMTc7dCByZXByZXNlbnQgY29tbW9uIGFuY2VzdHJ5ICh3aGljaCB3b3VsZCBiZSBzaG93biBieSBzaGFyZWQgUk5BIHNlcXVlbmNlcyksIGJ1dCByYXRoZXIgY29udmVyZ2VudCBldm9sdXRpb24gKHN1Y2ggYXMgdGhlIHNpbWlsYXIsIHN0cmVhbWxpbmVkIGZvcm1zIG9mIHNoYXJrcyBhbmQgZG9scGhpbnMpLg==

Cg==Cg==[Qq]

Look at the choices, and see if there’s one that’s more related to the idea of convergent evolution.

[c]IHNlbGVjdGlvbi BwcmVzc3VyZXM=[Qq]

[f]IE5pY2Ugam9iLiBJZiB0aGVzZSBsaW1iLWxpa2UgYXBwZW5kYWdlcyBhcmUgYW5hbG9nb3VzLCB0aGVuIHRoZXkgY291bGQgaGF2ZSBhcmlzZW4gYnkgdW5yZWxhdGVkIHNwZWNpZXMgZXhwZXJpZW5jaW5nIHNpbWlsYXIgc2VsZWN0aW9uIHByZXNzdXJlcy4gVGhhdCYjODIxNztzIGhvdyB3ZSBleHBsYWluIHRoZSBzaW1pbGFyIHN0cmVhbWxpbmVkIGZvcm0gb2Ygc2hhcmtzIGFuZCBkb2xwaGlucywgYXMgc2hvd24gYmVsb3csIGFuZCBpdCB3b3VsZCBhcHBseSBpbiB0aGlzIGNhc2UgYXMgd2VsbC4=

Cg==Cg==Cg==Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20f094e942b8b1″ question_number=”195″] In 1858, Charles Darwin and Alfred Russel Wallace proposed a theory of evolution. Which of the following observations aided in the development of this theory?

[c]IEFuIG9yZ2FuaXNtIGNhbiBsb3NlIGFuIHVudXNlZCB0cmFpdC4=[Qq]

[f]IE5vLiBUaGUga2V5IHRoaW5nIHRvIHJlbWVtYmVyIGhlcmUgaXMgdGhhdCBldm9sdXRpb24gaXMgYSA=cG9wdWxhdGlvbg==IHBoZW5vbWVub24uIFBvcHVsYXRpb25zIGV2b2x2ZS4gSW5kaXZpZHVhbHMgZ2V0IHNlbGVjdGVkIHRvIHN1cnZpdmUgYW5kIHJlcHJvZHVjZS4gQSB0cmFpdCBtaWdodCBkaXNhcHBlYXIgaW4gYSBwb3B1bGF0aW9uLCBidXQgbm90IGluIGFuIGluZGl2aWR1YWwu[Qq]

[c]IEFuIG9yZ2FuaXNtIGV2b2x2ZXMgZHVyaW5nIGl0cyBsaWZldGltZS4=[Qq]

[c]IFNvbWUgdmFyaWF0aW9uIGluIGEgcG 9wdWxhdGlvbiBpcyBpbmhlcml0ZWQu[Qq]

[f]IEV4YWN0bHkuIEluaGVyaXRlZCB2YXJpYXRpb24gaXMgYSBrZXkgcGFydCBvZiB0aGUgRGFyd2luLVdhbGxhY2UgaWRlYSBvZiBuYXR1cmFsIHNlbGVjdGlvbi4=[Qq]

[c]IFRoZSBlbnZpcm9ubWVudCByZW1haW5zIGNvbnN0YW50IGR1cmluZyBhbiBvcmdhbmlzbSYjODIxNztzIGxpZmV0aW1lLg==[Qq]

[f]IE5vLiBFbnZpcm9ubWVudHMgc29tZXRpbWVzIHJlbWFpbiBjb25zdGFudCwgYW5kIHNvbWV0aW1lcyBjaGFuZ2UuIFRoZSBhYmlsaXR5IG9mIGEgcG9wdWxhdGlvbiB0byBldm9sdmUgaW4gcmVzcG9uc2UgdG8gZW52aXJvbm1lbnRhbCBjaGFuZ2UgaXMgd2hhdCBuYXR1cmFsIHNlbGVjdGlvbiBpcyBhbGwgYWJvdXQu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20efa51879fcb1″ question_number=”196″] Researchers conducted an experiment to test the efficiency of ATP production in white-tailed hornets’ wing muscles. They measured ATP production at various flight speeds in a wind tunnel. At the highest speeds, the hornets were exhausted quickly. The results of the experiment are displayed in the diagram below.

Which of the following statements best describes the pattern in the diagram?

[c]IEdsdWNvc2UgaXMgcmVkdWNlZCBhdCBsb3cgZmxpZ2h0IHNwZWVkcyBhbmQgb3hpZGl6ZWQgYXQgaGlnaCBmbGlnaHQgc3BlZWRzLg==[Qq]

[f]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[Qq]

[c]IEdsdWNvc2UgaXMgdGhlIG1haW4gZW5lcmd5IHNvdXJjZSBhdCBsb3cgZmxpZ2h0IHNwZWVkcywgYnV0IG1vcmUgZW5lcmdldGljIG1vbGVjdWxlcyBhcmUgdXNlZCBhdCBoaWdoIGZsaWdodCBzcGVlZHMu[Qq]

[f]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[Qq]

[c]IE94eWdlbiBpcyB0aGUgZmluYWwgZWxlY3Ryb24gYWNjZXB0b3IgYXQgbG93IGZsaWdodCBz cGVlZHMgYW5kIGZlcm1lbnRhdGlvbiBpcyB1c2VkIGF0IGhpZ2ggZmxpZ2h0IHNwZWVkcy4=[Qq]

[f]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[Qq]

[c]IEVsZWN0cm9uIHRyYW5zcG9ydCBpcyB1c2VkIGF0IGxvdyBmbGlnaHQgc3BlZWRzLCBidXQgc2xvd3MgZG93biBtZXRhYm9saXNtIGF0IGhpZ2ggZmxpZ2h0IHNwZWVkcy4=[Qq]

[f]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[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20eeb9efc908b1″ question_number=”197″] Entomologists thought that two populations of insects were different species. Recent studies suggest that these populations are the same species. Which of the following observations best indicates that the two populations of insects are the same species?

[c]IFRoZSBwb3B1bGF0aW9ucyBhcmUgcGh5c2ljYWxseSBzaW1pbGFyLg==[Qq]

[f]IE5vLiBQaHlzaWNhbCBzaW1pbGFyaXR5LCBvbiBpdHMgb3duLCBkb2VzbiYjODIxNzt0IGVuc3VyZSB0aGF0IGRpZmZlcmVudCBwb3B1bGF0aW9ucyBhcmUgcGFydCBvZiB0aGUgc2FtZSBzcGVjaWVzLiBUaGluayBhYm91dCB3aGF0IGRlZmluZXMgYSBzcGVjaWVzLCBhbmQgbWFrZSBhIGRpZmZlcmVudCBjaG9pY2UgdGhlIG5leHQgdGltZSB5b3Ugc2VlIHRoaXMgcXVlc3Rpb24u[Qq]

[c]IFRoZSBwb3B1bGF0aW9ucyBvY2N1cHkgdGhlIHNhbWUgaGFiaXRhdC4=[Qq]

[f]IE5vLiBCZWluZyBpbiB0aGUgc2FtZSBoYWJpdGF0IGRvZXNuJiM4MjE3O3QgZW5zdXJlIHRoYXQgZGlmZmVyZW50IHBvcHVsYXRpb25zIGFyZSBwYXJ0IG9mIHRoZSBzYW1lIHNwZWNpZXMuIFRoaW5rIGFib3V0IHdoYXQgZGVmaW5lcyBhIHNwZWNpZXMsIGFuZCBtYWtlIGEgZGlmZmVyZW50IGNob2ljZSB0aGUgbmV4dCB0aW1lIHlvdSBzZWUgdGhpcyBxdWVzdGlvbi4=[Qq]

[c]IFRoZSBwb3B1bGF0aW9ucyBjYW4gaW 50ZXJicmVlZCBpbiB0aGUgd2lsZC4=[Qq]

[f]IEFic29sdXRlbHkuIFRoZSBiaW9sb2dpY2FsIHNwZWNpZXMgY29uY2VwdHMgZGVmaW5lcyBhIHNwZWNpZXMgYXMgYSBwb3B1bGF0aW9uIG9mIG9yZ2FuaXNtcyB0aGF0IGNhbiBpbnRlcmJyZWVkIGluIHRoZSB3aWxkLCBhbmQgd2hpY2ggaXMgcmVwcm9kdWN0aXZlbHkgaXNvbGF0ZWQgZnJvbSBvdGhlciBzdWNoIGdyb3Vwcy4=[Qq]

[c]IFRoZSBwb3B1bGF0aW9ucyBhcmUgc2VwYXJhdGVkIGJ5IGEgZ2VvbG9naWNhbCBiYXJyaWVy[Qq]

[f]IE5vLiBHZW9ncmFwaGljIGJhcnJpZXJzIGNhbiBiZSBhbiBpbXBvcnRhbnQgcGFydCBvZiB0aGUgc3BlY2lhdGlvbiBwcm9jZXNzLCBidXQgc2VwYXJhdGlvbiBieSBhIGdlb2dyYXBoaWMgYmFycmllciB3b3VsZG4mIzgyMTc7dCBlbnN1cmUgdGhhdCBkaWZmZXJlbnQgcG9wdWxhdGlvbnMgYXJlIHBhcnQgb2YgdGhlIHNhbWUgc3BlY2llcy4gVGhpbmsgYWJvdXQgd2hhdCBkZWZpbmVzIGEgc3BlY2llcywgYW5kIG1ha2UgYSBkaWZmZXJlbnQgY2hvaWNlIHRoZSBuZXh0IHRpbWUgeW91IHNlZSB0aGlzIHF1ZXN0aW9uLg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20edb77ea12cb1″ question_number=”198″] The concept of descent with modification is best represented by which of the following examples?

[c]IEFiaWxpdHkgb2YgZmlzaGVzIGFuZCBkb2xwaGlucyB0byBzd2lt[Qq]

[f]IE5vLiBMZXQmIzgyMTc7cyB0aGluayBhYm91dCB0aGlzIHRlcm0sIA==ZGVzY2VudCB3aXRoIG1vZGlmaWNhdGlvbg==LCB3aGljaCB3YXMgb25lIG9mIERhcndpbiYjODIxNztzIGZhdm9yaXRlIHRlcm1zIGZvciBkZXNjcmliaW5nIGV2b2x1dGlvbi4gRGVzY2VudA==IGlzIGFib3V0IGFuY2VzdHJ5LiBJJiM4MjE3O20gYSBkZXNjZW5kYW50IG9mIG15IGdyYW5kcGFyZW50cy4g[Qq]Modification means change. So, the ability of both dolphins and fish to swim might have come about through descent with modification, but there’s a clearer example of descent with modification in this list of choices.

[c]IENvbG9yIHZhcmlhdGlvbiBpbiBhIHNpbmdsZSBzcGVjaWVzIG9mIGZsb3dlcg==[Qq]

[f]IE5vLiBMZXQmIzgyMTc7cyB0aGluayBhYm91dCB0aGlzIHRlcm0sIA==ZGVzY2VudCB3aXRoIG1vZGlmaWNhdGlvbg==LCB3aGljaCB3YXMgb25lIG9mIERhcndpbiYjODIxNztzIGZhdm9yaXRlIHRlcm1zIGZvciBkZXNjcmliaW5nIGV2b2x1dGlvbi4gRGVzY2VudA==IGlzIGFib3V0IGFuY2VzdHJ5LiBJJiM4MjE3O20gYSBkZXNjZW5kYW50IG9mIG15IGdyYW5kcGFyZW50cy4g[Qq]Modification means change. Color variation in a single species of flower might be a result of genetic differences in different individuals within this population, and these differences might or might not be traceable to some evolutionary change. Look over the list of choices for this question, and see if there’s a clearer example of descent with modification that you can choose next time you see this question.

[c]IEVhcmx5IGVtYnJ5b25pYyBmb3JtcyBiaXJkcyBhbmQg bWFtbWFscyBhcmUgc3RydWN0dXJhbGx5IHNpbWlsYXI=[Qq]

[f]IEV4Y2VsbGVudCEgQm90aCBiaXJkcyBhbmQgbWFtbWFscyBldm9sdmVkIGZyb20gYSBjb21tb24gdmVydGVicmF0ZSBhbmNlc3Rvci4gVGhlIGVtYnJ5b25pYyBmb3JtcyBzaGFyZWQgYnkgYmlyZHMgYW5kIG1hbW1hbHMgc2hvdyB0aGUgZGVlcCBob21vbG9naWVzIGluIG91ciBzdHJ1Y3R1cmUsIHdoaWNoIGxhdGVyIGdldCBlbGFib3JhdGVkIGludG8gbWFtbWFsaWFuIGFuZCBhdmlhbiAoYmlyZC1saWtlKSBmb3Jtcy4gQ29uc2VxdWVudGx5LCBpdCYjODIxNztzIGEgZ3JlYXQgZXhhbXBsZSBvZiBkZXNjZW50IHdpdGggbW9kaWZpY2F0aW9uLg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20ec73dc2c60b1″ question_number=”199″] Which of the following directly contribute to change in population size?

[c]IEluYnJlZWRpbmcsIGRlYXRoIHJhdGUsIGJpcnRoIHJhdGUsIG91dGJyZWVkaW5nLCBzaXpl[Qq]

[f]IE5vLCBidXQgeW91JiM4MjE3O3JlIGFsbW9zdCBoYWxmIHdheSB0aGVyZS4gSW5icmVlZGluZyBhbmQgb3V0YnJlZWRpbmcgY2VydGFpbmx5IGltcGFjdCBhIGdlbmUgcG9vbCwgYnV0IHRoZXkgYXJlIG5vdCBkaXJlY3RseSBjb25uZWN0ZWQgd2l0aCBjaGFuZ2UgaW4gcG9wdWxhdGlvbiBzaXplLg==[Qq]

[c]IEVtaWdyYXRpb24sIGltbWlncmF0aW9uLCBk ZWF0aCByYXRlLCBiaXJ0aCByYXRlLCBzaXpl[Qq]

[f]IFllcy4gVGhlc2UgYXJlIHRoZSBmaXZlIGZhY3RvcnMgdGhhdCBkaXJlY3RseSBpbXBhY3QgY2hhbmdlIGluIHBvcHVsYXRpb24gc2l6ZS4=[Qq]

[c]IEVtaWdyYXRpb24sIGluYnJlZWRpbmcsIGRlYXRoIHJhdGUsIG91dGJyZWVkaW5nLCBzZXg=[Qq]

[f]IE5vLiBZb3UgaGF2ZSB0d28gb2YgdGhlIGZhY3RvcnMsIHNvIHlvdSYjODIxNztyZSBhbG1vc3QgaGFsZiB3YXkgdGhlcmUuIEluYnJlZWRpbmcgYW5kIG91dGJyZWVkaW5nIGNlcnRhaW5seSBpbXBhY3QgYSBnZW5lIHBvb2wsIGJ1dCB0aGV5IGFyZSBub3QgZGlyZWN0bHkgY29ubmVjdGVkIHdpdGggY2hhbmdlIGluIHBvcHVsYXRpb24gc2l6ZS4gQW5kIHdoaWxlIHBvcHVsYXRpb24gc2NpZW50aXN0cyBtZWFzdXJlIG1hbnkgdGhpbmdzIHJlbGF0ZWQgdG8gc2V4IChzdWNoIGFzIG1vcnRhbGl0eSkgaXQmIzgyMTc7cyBsZXNzIGltcG9ydGFudCB0aGFuIG90aGVyIHRoaW5ncyBvbiB0aGUgbGlzdC4=[Qq]

[c]IEVtaWdyYXRpb24sIGltbWlncmF0aW9uLCBpbmJyZWVkaW5nLCBkZWF0aCByYXRlLCBiaXJ0aCByYXRlLCBvdXRicmVlZGluZywgc2V4LCBzaXpl[Qq]

[f]IE5vLiBZb3UgaGF2ZSBhbGwgb2YgdGhlIGtleSBmYWN0b3JzICh0aGVyZSBhcmUgZml2ZSksIGJ1dCB5b3UmIzgyMTc7dmUgdGhyb3duIGluIGEgZmV3IHRoYXQgYXJlbiYjODIxNzt0IGRpcmVjdGx5IGNvbm5lY3RlZCB0byBhIHBvcHVsYXRpb24mIzgyMTc7cyBncm93dGggcmF0ZS4=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20eb865f6f88b1″ question_number=”200″] In which of the following pairs are both items linked to a decrease in population size?

[c]IEVtaWdyYXRpb24gYW5kIGltbWlncmF0aW9u[Qq]

[f]IE5vLiBFbWlncmF0aW9uIGRlY3JlYXNlcyBwb3B1bGF0aW9uIHNpemUsIGJ1dCBpbW1pZ3JhdGlvbiBpbmNyZWFzZXMgaXQu[Qq]

[c]IEVtaWdyYXRpb24gYW 5kIGRlYXRoIHJhdGU=[Qq]

[f]IFllcy4gRW1pZ3JhdGlvbiBhbmQgZGVhdGggcmF0ZSBib3RoIGRlY3JlYXNlIHBvcHVsYXRpb24gc2l6ZS4=[Qq]

[c]IEVtaWdyYXRpb24gYW5kIGJpcnRoIHJhdGU=[Qq]

[f]IE5vLiBFbWlncmF0aW9uIGRlY3JlYXNlcyBwb3B1bGF0aW9uIHNpemUsIGJ1dCBiaXJ0aCByYXRlIGluY3JlYXNlcyBpdC4=[Qq]

[c]IEltbWlncmF0aW9uIGFuZCBiaXJ0aCByYXRl[Qq]

[f]IE5vLiBJbW1pZ3JhdGlvbiBhbmQgYmlydGggcmF0ZSBib3RoIGJyaW5nIG5ldyBpbmRpdmlkdWFscyBpbnRvIGEgcG9wdWxhdGlvbiwgaW5jcmVhc2luZyBwb3B1bGF0aW9uIHNpemUu[Qq]

[c]IERlYXRoIHJhdGUgYW5kIGJpcnRoIHJhdGU=[Qq]

[f]IE5vLiBEZWF0aCByYXRlIGRlY3JlYXNlcyBwb3B1bGF0aW9uIHNpemUsIGJ1dCBiaXJ0aCByYXRlIGluY3JlYXNlcyBpdC4=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20ea98e2b2b0b1″ question_number=”201″] Earth’s atmosphere today is significantly different than the atmosphere on the early Earth, four billion years ago. Which of the following gases is present in today’s atmosphere but was not present in early Earth’s atmosphere?

[c]IEg=_Mg==[Qq][c]IE 8=_Mg==IA==[Qq][c]IENI_NA==IA==[Qq][c]IEg=_Mg==TyA=[Qq][c]IE5I_Mw==

Cg==[Qq]

[f]IE5vLiBVbmxpa2UgcGxhbmV0cyBsaWtlIEp1cGl0ZXIsIHdoaWNoIGhhdmUgYSBsb3Qgb2YgaHlkcm9nZW4gZ2FzIChI_Mg==KSBpbiB0aGVpciBhdG1vc3BoZXJlLCB0aGVyZSYjODIxNztzIHZlcnkgbGl0dGxlIGh5ZHJvZ2VuIGdhcyBpbiB0aGUgRWFydGgmIzgyMTc7cyBhdG1vc3BoZXJlIHRvZGF5LiBIZXJlJiM4MjE3O3MgYSBoaW50OiB0aGUgRWFydGgmIzgyMTc7cyBhdG1vc3BoZXJlIGhhcyBjaGFuZ2VkIGJlY2F1c2Ugb2YgYSB3YXN0ZSBwcm9kdWN0IHJlbGVhc2VkIGJ5IHBob3Rvc3ludGhldGljIG9yZ2FuaXNtcy4=[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIG1vbGVjdWxhciBveHlnZW4gKE8=_Mg==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[Qq]

[f]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[Qq]

[f]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[Qq]

[f]IE5vLiBUaGVyZSYjODIxNztzIGhhcmRseSBhbnkgYW1tb25pYSAoTkg=_Mw==KSBpbiB0aGUgRWFydGgmIzgyMTc7cyBhdG1vc3BoZXJlLiBJdCB3YXMgZGV0ZWN0ZWQgZm9yIHRoZSBmaXJzdCB0aW1lIG9ubHkgaW4gMjAxNi4gSGVyZSYjODIxNztzIGEgaGludDogdGhlIEVhcnRoJiM4MjE3O3MgYXRtb3NwaGVyZSBoYXMgY2hhbmdlZCBiZWNhdXNlIG9mIGFjdGl2aXRpZXMgY2FycmllZCBvdXQgYnkgcGhvdG9zeW50aGV0aWMgb3JnYW5pc21zLiBXaGF0IGdhcyBkbyB0aGVzZSBvcmdhbmlzbXMgcHJvZHVjZT8=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20e9adba01bcb1″ question_number=”202″] The nucleotide sequence below is part of the template strand for the gene coding protein Q. If, during DNA replication, a complementary nucleotide was transcribed from this sequence, what would be the base for the nucleotide marked as * ?

[c]IEHCoCDCoCA=[Qq][c]IEPCoCDCoCA=[Qq][c]IEfCoC DCoCA=[Qq][c]IFTCoCDCoCA=[Qq][c]IFU=

Cg==[Qq]

[f]IE5vLiBUaGlzIHF1ZXN0aW9uIGlzIGNoZWNraW5nIHlvdXIgdW5kZXJzdGFuZGluZyBvZiB0aGUgYmFzZSBwYWlyaW5nIHJ1bGVzIGZvciBETkE6IEEgKGFkZW5pbmUpIGJvbmRzIHdpdGggVCAodGh5bWluZSk7IEMgKGN5dG9zaW5lKSBib25kcyB3aXRoIEcgKGd1YW5pbmUpLg==[Qq]

[f]IFllcy4gVGhlIG51Y2xlb3RpZGUgQyAoY3l0b3NpbmUpIGFsd2F5cyBib25kcyB3aXRoIEcgKGd1YW5pbmUp[Qq]

[f]IE5vLiBUaGlzIHF1ZXN0aW9uIGlzIGFib3V0IEROQSByZXBsaWNhdGlvbiwgbm90IHRyYW5zY3JpcHRpb24uIFRoZSBSTkEgYmFzZSBVIChVcmFjaWwpIGlzbiYjODIxNzt0IGludm9sdmVkLiBUcnkgdGhpcyBhZ2FpbiwgZm9jdXNpbmcgb24gRE5BIHJlcGxpY2F0aW9uIGFuZCB0aGUgYmFzZSBwYWlyaW5nIHJ1bGVzIGZvciBETkEu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20e883b40fbcb1″ question_number=”203″] The nucleotide sequence below is part of the template strand for the gene coding protein Q.

The “G” on the left is at the 5′ end, and the A on the right is at the 3′ end. What is the second amino acid that this DNA is coding for? You can use the genetic code below to find the answer.

[c]IEdsbiAoZ2x1dGFtaW5lKQ==[Qq]

[f]IE5vLiBUaGUgc2Vjb25kIGFtaW5vIGFjaWQgd2lsbCBiZSB0aGUgb25lIGNvZGVkIGZvciBmcm9tIHRoZSBzZWNvbmQgdHJpcGxldC4gQ0dULiBGaW5kIHRoZSBtUk5BIGNvbXBsZW1lbnQgb2YgQ0dULCBhbmQgdGhlbiBsb29rIHRoYXQgdXAgaW4gdGhlIGdlbmV0aWMgY29kZSBjaGFydC4=[Qq]

[c]IEFsYSAoYW xhbmluZSk=[Qq]

[f]IEV4Y2VsbGVudC4gQ0dUIGluIEROQSBnZXRzIHRyYW5zY3JpYmVkIGludG8gR0NBIGluIG1STkEsIHdoaWNoIGNvZGVzIGZvciBBbGFuaW5lLg==[Qq]

[c]IEdseSAoZ2x5Y2luZSku[Qq]

[c]IEdsbiAoZ2x1dGFtaW5lKQ==[Qq]

[c]IFRociAodGhyZW9uaW5lKQ==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20e7918f3b1cb1″ question_number=”204″] The diagrams below depict sedimentary rock strata from two different fossil sites. Which of the following conclusions about relative fossil age is best supported by these diagrams?

[c]IFRoZSBmb3NzaWxzIGluIGxheWVyIEUgYXJlIHRoZSBzYW1lIGFnZSBhcyB0aGUgZm9zc2lscyBpbiBsYXllciBJLg==[Qq]

[f]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[Qq]

[c]IFRoZSBmb3NzaWxzIGluIGxheWVyIEYgYXJlIHlvdW5nZXIgdGhhbiB0aGUgZm9zc2lscyBpbiBsYXllciBELg==[Qq]

[f]IE5vLiBUaGVyZSBhcmUgdHdvIHByaW5jaXBsZXMgYXQgd29yayBoZXJlLiBUaGUgZmlyc3QgaXMgdGhlIGlkZWEgb2Ygc3VwZXJwb3NpdGlvbjogaW4gdW5kZWZvcm1lZCBzZWRpbWVudGFyeSBzdHJhdGEsIHlvdW5nZXIgbGF5ZXJzIGFyZSBhYm92ZSBvbGRlciBsYXllcnMuIFRoZSBzZWNvbmQgaXMgdGhlIGlkZWEgdGhhdCBmb3NzaWxzIG9mIHRoZSBzYW1lIHR5cGUgKHdpdGggc2ltaWxhciBtb3JwaG9sb2d5KSBhcmUgYWJvdXQgdGhlIHNhbWUgYWdlLiBOb3RlIHRoYXQgRCBhbmQgRiBhcmUgdGhlIHNhbWUgZm9zc2lsIHR5cGUuIFJpZ2h0IGF3YXkgeW91IGNhbiBjb25jbHVkZSB0aGF0IHRoZWlyIGFnZSBpcyB0aGUgc2FtZS4gTm93IHVzZSB0aGUgcHJpbmNpcGxlIG9mIHN1cGVycG9zaXRpb24gdG8gaWRlbnRpZnkgdGhlIGNvcnJlY3QgYW5zd2VyLg==[Qq]

[c]IFRoZSBmb3NzaWxzIGluIGxheWVyIEMgYXJlIHlv dW5nZXIgdGhhbiBmb3NzaWxzIGluIGxheWVyIEYu[Qq]

[f]IEV4Y2VsbGVudC4gRCBhbmQgRiBhcmUgdGhlIHNhbWUgdHlwZSBvZiBmb3NzaWxzLCBhbmQgdGhlcmVmb3JlIGFyZSB0aGUgc2FtZSBhZ2UuIEMgaXMgYWJvdmUgRCwgYW5kIHRoZXJlZm9yZSBoYXMgdG8gYmUgeW91bmdlciB0aGFuIEYu[Qq]

[c]IFRoZSBmb3NzaWxzIGluIGxheWVyIEcgYXJlIHlvdW5nZXIgdGhhbiB0aGUgZm9zc2lscyBpbiBsYXllciBFLg==[Qq]

[f]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[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20e6a1be7260b1″ question_number=”205″] Within a polypeptide, the bond linking the monomers (indicated by the arrow and green circle below) is a(n) _________.

[c]IGlvbmljIGJvbmQ=[Qq]

[f]IE5vLiA=QW4gaW9uaWMgYm9uZCBpcyB0aGUgYXR0cmFjdGlvbiBiZXR3ZWVuIHBvc2l0aXZlbHkgYW5kIG5lZ2F0aXZlbHkgY2hhcmdlZCBpb25zLg==IA==VGhleSYjODIxNztyZSBpbXBvcnRhbnQgaW4gcHJvdGVpbnMgYXMgYSBraW5kIG9mIHRlcnRpYXJ5IGludGVyYWN0aW9uIChiZXR3ZWVuIHNpZGUgY2hhaW5zKS4gRm9yIGV4YW1wbGUsIGJvbmQgbnVtYmVyIDQgYmVsb3cgaXMgYW4gaW9uaWMgYm9uZC4=

[Qq]

Here’s a hint: the name for the bond that connects amino acids, indicated by the arrow and green circle below, begins with the same letter as the word “polypeptide.”

[c]IGh5ZHJvZ2VuIGJvbmQ=[Qq]

[f]IE5vLiBIeWRyb2dlbiBib25kcyByZXN1bHQgZnJvbSB0aGUgYXR0cmFjdGlvbiBiZXR3ZWVuIHBhcnRpYWxseSBwb3NpdGl2ZSBhbmQgcGFydGlhbGx5IG5lZ2F0aXZlIHBhcnRzIG9mIGEgbW9sZWN1bGUuIFRoZXkmIzgyMTc7cmUgdGhlIGtpbmQgb2YgYm9uZHMgdGhhdCB3YXRlciBtb2xlY3VsZXMgZm9ybSB3aXRoIG9uZSBhbm90aGVyLCBhbmQgdGhleSYjODIxNztyZSBpbXBvcnRhbnQgaW4gcHJvdGVpbiBzdHJ1Y3R1cmUgYXQgdGhlIHNlY29uZGFyeSwgdGVydGlhcnkgYW5kIHF1YXRlcm5hcnkgbGV2ZWwuIEZvciBleGFtcGxlLCBib25kIG51bWJlciAyIGJlbG93IGlzIGEgaHlkcm9nZW4gYm9uZC4=

Cg==

[Qq]Here’s a hint: the name for the bond that connects amino acids, indicated by the arrow and green circle below, begins with the same letter as “polypeptide.”

[c]IHBlcHRpZG UgYm9uZA==[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIGJvbmQgdGhhdCBjb25uZWN0cyBhbWlubyBhY2lkcyB0b2dldGhlciB3aXRoaW4gYSBwb2x5cGVwdGlkZSBpcyBhIHBlcHRpZGUgYm9uZC4=[Qq]

[c]IFZhbiBkZXIgV2FhbHMgaW50ZXJhY3Rpb24u[Qq]

[f]IE5vLiBWYW4gZGVyIFdhYWxzIGJvbmRzIGFyZSB3ZWFrLCBpbnRlcm1vbGVjdWxhciBib25kcy4gVGhleSYjODIxNztyZSBpbXBvcnRhbnQgaW4gcHJvdGVpbiBzdHJ1Y3R1cmUgbW9zdGx5IGF0IHRoZSB0ZXJ0aWFyeSBsZXZlbC4gWW91IGNhbiBzZWUgYW4gZXhhbXBsZSBiZWxvdyBhdCBib25kIG51bWJlciAxLCB3aGljaCBzaG93cyBoeWRyb3Bob2JpYyBzaWRlIGNoYWlucyBjbHVzdGVyaW5nIHRvZ2V0aGVyLg==

Cg==

[Qq]Here’s a hint: the name for the bond that connects amino acids, indicated by the arrow and green circle below, begins with the same letter as “polypeptide.”

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20e5af999dc0b1″ question_number=”206″] One of the following molecules will, when mixed with water, organize itself into a bilayer. Which one?

[c]IDHCoCDCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoC DCoCA=[Qq][c]IDQ=

Cg==[Qq]

[f]IE5vLiAxIGlzIGEgZmF0dHkgYWNpZC4gV2hlbiBtaXhlZCB3aXRoIHdhdGVyLCBpdCB0eXBpY2FsbHkgb3JnYW5pemVzIGl0c2VsZiBpbnRvIGEgbWljZWxsZQ==IChzaG93biBiZWxvdykuIEEgaXMgdGhlIGh5ZHJvcGhpbGljIGhlYWQgb2YgdGhlIGZhdHR5IGFjaWQsIGFuZCBCIGlzIHRoZSBoeWRyb3Bob2JpYyB0YWlsLiBIZXJlJiM4MjE3O3MgYSBoaW50OiB0aGUgbW9sZWN1bGUgdGhhdCBmb3JtcyBhIGJpbGF5ZXIgaGFzIA==dHdvIGZhdHR5IGFjaWQgdGFpbHMu

[Qq]

[f]IE5vLiAyIHJlcHJlc2VudHMgYSB3YXggbW9sZWN1bGUuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHRoZSBtb2xlY3VsZSB0aGF0IGZvcm1zIGEgYmlsYXllciBoYXMgdHdvIGZhdHR5IGFjaWQgdGFpbHMsIGFuZCBhICYjODIyMDtoZWFkJiM4MjIxOyB0aGF0IGNvbnRhaW5zIGEgcGhvc3BoYXRlIGdyb3VwLg==[Qq]

[f]IEV4Y2VsbGVudDogMyBpcyBhIHBob3NwaG9saXBpZCwgYW5kIHdoZW4gbWl4ZWQgd2l0aCB3YXRlciwgb25lIHN0cnVjdHVyZSBpdCBjYW4gc3BvbnRhbmVvdXNseSBmb3JtIGlzIGEgcGhvc3Bob2xpcGlkIGJpbGF5ZXIu

Cg==

[Qq]

[f]IE5vLiA0IHJlcHJlc2VudHMgYSB0cmlnbHljZXJpZGUsIHRoZSB0eXBlIG9mIG1vbGVjdWxlIHRoYXQgbWFrZXMgdXAgb2lscyBhbmQgZmF0cy4gSGVyZSYjODIxNztzIGEgaGludDogdGhlIG1vbGVjdWxlIHRoYXQgZm9ybXMgYSBiaWxheWVyIGhhcyA=dHdvIGZhdHR5IGFjaWQgdGFpbHMu[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20e4674f112cb1″ question_number=”207″] Which of the molecules below is a key component of cell membranes?

[c]IDHCoCDCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoC DCoCA=[Qq][c]IDQ=

Cg==[Qq]

[f]IE5vLiAxIGlzIGEgZmF0dHkgYWNpZC4gSGVyZSYjODIxNztzIGEgaGludC4gWW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIGEgcGhvc3Bob2xpcGlkLCBhbmQgdGhlICYjODIyMDtwaG9zcGhvJiM4MjIxOyBwYXJ0IG9mIHRoZSBuYW1lIHN0YW5kcyBmb3IgcGhvc3BoYXRlIGdyb3VwLg==[Qq]

[f]IE5vLiAyIGlzIGEgd2F4LiBIZXJlJiM4MjE3O3MgYSBoaW50LiBZb3UmIzgyMTc7cmUgbG9va2luZyBmb3IgYSBwaG9zcGhvbGlwaWQsIGFuZCB0aGUgJiM4MjIwO3Bob3NwaG8mIzgyMjE7IHBhcnQgb2YgdGhlIG5hbWUgc3RhbmRzIGZvciBwaG9zcGhhdGUgZ3JvdXAu[Qq]

[f]IEV4Y2VsbGVudC4gMyBpcyBhIHBob3NwaG9saXBpZCwgdGhlIGtleSBzdHJ1Y3R1cmFsIGNvbXBvbmVudCBvZiBjZWxsIG1lbWJyYW5lcyAoc2hvd24gYXQgJiM4MjIwO0EmIzgyMjE7IGJlbG93KQ==[Qq]

[f]IE5vLiA0IGlzIGEgdHJpZ2x5Y2VyaWRlIChhbHNvIGtub3duIGFzIGEgdHJpYWN5bGdseWNlcmlkZSk6IHRoZXNlIGFyZSB0aGUgbW9sZWN1bGVzIHRoYXQgbWFrZSB1cCBmYXRzIGFuZCBvaWxzLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBZb3UmIzgyMTc7cmUgbG9va2luZyBmb3IgYSBwaG9zcGhvbGlwaWQsIGFuZCB0aGUgJiM4MjIwO3Bob3NwaG8mIzgyMjE7IHBhcnQgb2YgdGhlIG5hbWUgc3RhbmRzIGZvciBwaG9zcGhhdGUgZ3JvdXAu[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20e34d957268b1″ question_number=”208″] Which of the molecules below is used for energy storage and insulation?

[c]IDHCoCDCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoCDCoCA=[Qq][c]ID Q=

Cg==[Qq]

[f]IE5vLiAxIGlzIGEgZmF0dHkgYWNpZC4gSXQmIzgyMTc7cyBhIHBhcnQgb2YgdGhlIG1vbGVjdWxlIHlvdSYjODIxNztyZSBsb29raW5nIGZvciwgd2hpY2ggaXMgYWxzbyBjYWxsZWQgYSB0cmlnbHljZXJpZGUuIFRoaW5rIG9mIHRoZSBwcmVmaXggJiM4MjIwO3RyaSwmIzgyMjE7IGFuZCB1c2UgdGhlIGhpbnQgSSBqdXN0IGdhdmUgeW91IHRvIGZpZ3VyZSBvdXQgdGhlIGFuc3dlciB0aGUgbmV4dCB0aW1lIHlvdSBzZWUgdGhpcyBxdWVzdGlvbi4=[Qq]

[f]IE5vLiAyIGlzIGEgd2F4LCBhIGxpcGlkIG1vbGVjdWxlIHRoYXQmIzgyMTc7cyB1c2VkIGZvciB3YXRlcnByb29maW5nLiBZb3UmIzgyMTc7cmUgbG9va2luZyBmb3IgYSB0cmlnbHljZXJpZGUsIGEgbW9sZWN1bGUgdGhhdCBoYXMgdGhyZWUgZmF0dHkgYWNpZHMu[Qq]

[f]IE5vLiAzIGlzIGEgcGhvc3Bob2xpcGlkLiBUaGVzZSBtb2xlY3VsZXMgYXJlIHRoZSBrZXkgc3RydWN0dXJhbCBjb21wb25lbnQgb2YgY2VsbCBtZW1icmFuZXMuIFlvdSYjODIxNztyZSBsb29raW5nIGZvciBhIHRyaWdseWNlcmlkZSwgYSBtb2xlY3VsZSB0aGF0IGhhcyB0aHJlZSBmYXR0eSBhY2lkcy4=[Qq]

[f]IEZhYnVsb3VzLiA0IGlzIGEgdHJpZ2x5Y2VyaWRlLCBjb21tb25seSBrbm93biBhcyBhIGZhdCBvciBhbiBvaWwgKGRlcGVuZGluZyBvbiB0aGUgc3RydWN0dXJlIG9mIHRoZSBmYXR0eSBhY2lkcyku[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”4.Cell Communication, Cell Cycle, Feedback” dataset_id=”dk MC dataset2|20e20c470980b1″ question_number=”209″] The images below illustrate and describe the key steps in a diagnostic test for HIV infection.

“Antibodies” are proteins produced by the immune system that fight off invading pathogens (disease causing agents). Which of the following statements best explains why this diagnostic test is valid?

[c]IFRoZSBkeWUgYnJlYWtzIGRvd24gdGhlIGFudGlib2RpZXMgaW4gdGhlIHBhdGllbnQmIzgyMTc7cyBibG9vZCBzZXJ1bS4=[Qq]

[f]IE5vLiBOb3RlIHRoYXQgaW4gc3RlcCAyLCB5b3Ugc2VlIHRoZSBwYXRpZW50JiM4MjE3O3MgSElWIGFudGlib2RpZXMgYmluZGluZyB3aXRoIHRoZSBhbnRpZ2VuIHRoYXQmIzgyMTc7cyBvbiB0aGUgc3VyZmFjZSBvZiB0aGUgY29udGFpbmVyLiBJbiB0aGUgc3Vic2VxdWVudCBzdGVwcywgdGhhdCBhbnRpYm9keSBpcyBuZXZlciBicm9rZW4gZG93bi4gTG9vayBvdmVyIHRoZSBkaWFncmFtIGFnYWluIGFuZCBhc2sgeW91cnNlbGYgJiM4MjIwO0hvdyBpcyB0aGlzIHRlc3Qgc2hvd2luZyB0aGF0IHRoZSBwYXRpZW50IGlzIHByb2R1Y2luZyBhbnRpYm9kaWVzIHRvIEhJViAoYW5kIG11c3QgdGhlcmVmb3JlIGJlIGluZmVjdGVkKT8mIzgyMjE7[Qq]

[c]IFRoZSBlbnp5bWUgaGFzIGFuIGFjdGl2ZSBzaXRlIGZvciB0aGUgSElWIGFudGlnZW4u[Qq]

[f]IE5vLiBUaGUgZW56eW1lIChFKSBpcyBvbiB0aGUgZW5naW5lZXJlZCBhbnRpYm9keS4gVGhlIGVuZ2luZWVyZWQgYW50aWJvZHkgaXMgYmluZGluZyB3aXRoIHRoZSBwYXRpZW50JiM4MjE3O3MgSElWIGFudGlib2RpZXMuIExvb2sgb3ZlciB0aGUgZGlhZ3JhbSBhZ2FpbiBhbmQgYXNrIHlvdXJzZWxmICYjODIyMDtIb3cgaXMgdGhpcyB0ZXN0IHNob3dpbmcgdGhhdCB0aGUgcGF0aWVudCBpcyBwcm9kdWNpbmcgYW50aWJvZGllcyB0byBISVYgKGFuZCBtdXN0IHRoZXJlZm9yZSBiZSBpbmZlY3RlZCk/JiM4MjIxOw==[Qq]

[c]IFRoZSBISVYgYW50aWdlbiBoYXMgYSBjb21wbGVtZW 50YXJ5IHNoYXBlIHRvIHRoZSBISVYgYW50aWJvZHku[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIHZhbGlkaXR5IG9mIHRoaXMgdGVzdCBpcyBiYXNlZCB1cG9uIHRoZSBmYWN0IHRoYXQgYXMgc2hvd24gaW4gc3RlcCAyLCB0aGUgYW50aWdlbiBpbiB0aGUgY29udGFpbmVyIHdpbGwgYmluZCB3aXRoIEhJViBhbnRpYm9kaWVzIGluIHRoZSBwYXRpZW50JiM4MjE3O3MgYmxvb2QuIFRoZSBiaW5kaW5nIGhhcHBlbnMgYmVjYXVzZSB0aGUgc2hhcGUgb2YgdGhlIGFudGlnZW4gaXMgY29tcGxlbWVudGFyeSB0byB0aGUgc2hhcGUgb2YgdGhlIGFudGlib2R5Lg==[Qq]

[c]IFRoZSBlbmdpbmVlcmVkIGFudGlib2R5IGhhcyB0aGUgc2FtZSBzaGFwZSBhcyB0aGUgSElWIGFudGlnZW4u[Qq]

[f]IE5vLiBUYWtlIGEgZ29vZCBsb29rIGF0IHN0ZXAgMy4gV2hhdCBpcyB0aGUgZW5naW5lZXJlZCBhbnRpYm9keSBiaW5kaW5nIHdpdGg/IExvb2sgb3ZlciB0aGUgZGlhZ3JhbSBhZ2FpbiBhbmQgYXNrIHlvdXJzZWxmICYjODIyMDtIb3cgaXMgdGhpcyB0ZXN0IHNob3dpbmcgdGhhdCB0aGUgcGF0aWVudCBpcyBwcm9kdWNpbmcgYW50aWJvZGllcyB0byBISVYgKGFuZCBtdXN0IHRoZXJlZm9yZSBiZSBpbmZlY3RlZCk/JiM4MjIxOw==[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20e0dfed0b9cb1″ question_number=”210″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

Molecules that would be categorized as lipids include

[c]IG9ubHkgQS4=[Qq]

[c]IG9ubHkgQi4=[Qq]

[c]IGJvdGggQSBhbmQgQi4=[Qq]

[c]IEEsIEIgYW5kIEMu[Qq]

[c]IEMgYW 5kIEQu[Qq]

[f]IE5vLiAzIGFtaW5vIGFjaWRzIG1ha2UgdXAgYSBwb2x5cGVwdGlkZSwgd2hpY2gsIHdoZW4gYSBiaXQgbG9uZ2VyIGFuZCBmb2xkZWQgdXAgaW50byBhIHNwZWNpZmljIHNoYXBlLCBiZWNvbWVzIGEgcHJvdGVpbi4=[Qq]

[f]IE5vLiBCIGlzIGEgbnVjbGVvdGlkZSwgYSBidWlsZGluZyBibG9jayBvZiBudWNsZWljIGFjaWRzIGxpa2UgRE5BIG9yIFJOQS4=[Qq]

[f]IE5vLiBXIGlzIGEgcG9seXBlcHRpZGUsIGFuZCBYIGlzIGEgbnVjbGVvdGlkZS4=[Qq]

[f]IE5vLiBBIGlzIGEgcG9seXBlcHRpZGUsIGFuZCBCIGlzIGEgbnVjbGVvdGlkZS4gYnV0IHlvdSYjODIxNztyZSByaWdodCBhYm91dCBDLCB3aGljaCBpcyBhIHBob3NwaG9saXBpZC4=[Qq]

[f]IEV4Y2VsbGVudC4gQm90aCBDIGFuZCBEIGFyZSBsaXBpZHMuIEMgaXMgYSBwaG9zcGhvbGlwaWQgYW5kIEQgaXMgYSB0cmlnbHljZXJpZGUgKHRoZSBraW5kIG9mIG1vbGVjdWxlIHRoYXQgbWFrZXMgdXAgZmF0cyBhbmQgb2lscyku[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20df82ae1404b1″ question_number=”211″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

In a cell, molecule B’s function is

[c]IGVuY29kaW5nIGdlbmV0 aWMgaW5mb3JtYXRpb24u[Qq]

[f]IEV4Y2VsbGVudC4gQiBpcyBhIG51Y2xlb3RpZGUuIE51Y2xlb3RpZGVzIGFyZSB0aGUgbW9ub21lcnMgb2YgbW9sZWN1bGVzIGxpa2UgRE5BIGFuZCBSTkEsIG51Y2xlaWMgYWNpZHMgdGhhdCBzdG9yZSBhbmQgY29tbXVuaWNhdGUgZ2VuZXRpYyBpbmZvcm1hdGlvbi4=[Qq]

[c]IHRyYW5zcG9ydGluZyBtYXRlcmlhbHMgaW50byB0aGUgY2VsbC4=[Qq]

[f]IE5vLiBCIGlzIGEgbnVjbGVvdGlkZS4gTnVjbGVvdGlkZXMgYXJlIHRoZSBtb25vbWVycyBvZiBudWNsZWljIGFjaWRzLCB3aGljaCBpbmNsdWRlIHN1YnN0YW5jZXMgbGlrZSBETkEgYW5kIFJOQS4gVGhpbmsgb2YgdGhlc2UgbW9sZWN1bGVzJiM4MjE3OyBmdW5jdGlvbiwgYW5kIHlvdSYjODIxNztsbCBoYXZlIHRoZSBhbnN3ZXIgdGhlIG5leHQgdGltZSB5b3Ugc2VlIHRoaXMgcXVlc3Rpb24u[Qq]

[c]IGxvbmcgdGVybSBzdG9yYWdlIG9mIGVuZXJneS4=[Qq]

[f]IE5vLiBMb25nIHRlcm0gZW5lcmd5IHN0b3JhZ2UgaXMgdGhlIGZ1bmN0aW9uIG9mIEQsIGEgdHJpZ2x5Y2VyaWRlIChmYXQgb3Igb2lsKS4gQiBpcyBhIG51Y2xlb3RpZGUuTnVjbGVvdGlkZXMgYXJlIHRoZSBtb25vbWVycyBvZiBudWNsZWljIGFjaWRzLCB3aGljaCBpbmNsdWRlIHN1YnN0YW5jZXMgbGlrZSBETkEgYW5kIFJOQS4gVGhpbmsgb2YgdGhlc2UgbW9sZWN1bGVzJiM4MjE3OyBmdW5jdGlvbiwgYW5kIHlvdSYjODIxNztsbCBoYXZlIHRoZSBhbnN3ZXIgdGhlIG5leHQgdGltZSB5b3Ugc2VlIHRoaXMgcXVlc3Rpb24u[Qq]

[c]IHN0YWJpbGl6aW5nIHRoZSBwbGFzbWEgbWVtYnJhbmU=[Qq]

[f]IE5vLiBTdGFiaWxpemluZyB0aGUgcGxhc21hIG1lbWJyYW5lIGlzIHRoZSBmdW5jdGlvbiBvZiBjaG9sZXN0ZXJvbCwgd2hpY2ggaXMgbm90IHNob3duIGluIHRoZSBkaWFncmFtIGFib3ZlLiBCIGlzIGEgbnVjbGVvdGlkZS4gTnVjbGVvdGlkZXMgYXJlIHRoZSBtb25vbWVycyBvZiBudWNsZWljIGFjaWRzLCB3aGljaCBpbmNsdWRlIHN1YnN0YW5jZXMgbGlrZSBETkEgYW5kIFJOQS4gVGhpbmsgb2YgdGhlc2UgbW9sZWN1bGVzJiM4MjE3OyBmdW5jdGlvbiwgYW5kIHlvdSYjODIxNztsbCBoYXZlIHRoZSBhbnN3ZXIgdGhlIG5leHQgdGltZSB5b3Ugc2VlIHRoaXMgcXVlc3Rpb24u[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20de66a0695cb1″ question_number=”212″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

All of the molecules above are built from smaller subunits. As these subunits are being combined,

[c]IHBlcHRpZGUgYm9uZHMgYXJlIGZvcm1lZC4=[Qq]

[f]IE5vLiBQZXB0aWRlIGJvbmRzIGFyZSB0aGUgYm9uZHMgdGhhdCBjb25uZWN0IHRoZSBhbWlubyBhY2lkcyBpbiBhIHBvbHlwZXB0aWRlIChvciBwcm90ZWluKS4gSW4gdGhlIGRpYWdyYW0gYmVsb3csIG51bWJlciA0IGluZGljYXRlcyBhIHBlcHRpZGUgYm9uZC4=

Cg==

[Qq]Think of something that happens as all of these molecules are formed.

[c]IHRoZXJlIGlzIGEgbmV0IGVuZXJneSBvdXRwdXQu[Qq]

[f]IE5vLiBBbG1vc3QgYWxsIHN5bnRoZXNpcyByZWFjdGlvbnMgcmVxdWlyZQ==IGVuZXJneSB0byBtb3ZlIGZvcndhcmQu[Qq]

[c]IGEgbW9sZWN1bGUgb2Ygd2F0ZXIgaXMgYWRkZWQu[Qq]

[f]IE5vLiBNb2xlY3VsZXMgb2Ygd2F0ZXIgYXJlIA==YWRkZWQ=IGluIGh5ZHJvbHlzaXMgcmVhY3Rpb25zLCB3aGljaCB0eXBpY2FsbHkgYnJlYWsgbGFyZ2UgbW9sZWN1bGVzIGFwYXJ0IGludG8gdGhlaXIgY29uc3RpdHVlbnQgbW9ub21lcnMu

Cg==

[Qq]

[c]IGEgbW9sZWN1bGUgb2Ygd2 F0ZXIgaXMgcmVtb3ZlZC4=[Qq]

[f]IEV4Y2VsbGVudC4gQWxsIG9mIHRoZXNlIG1vbGVjdWxlcyAoYW5kLCBpbiBmYWN0LCBhbG1vc3QgYWxsIGJpb2xvZ2ljYWwgbW9sZWN1bGVzKSwgYXJlIGZvcm1lZCB0aHJvdWdoIGRlaHlkcmF0aW9uIHN5bnRoZXNpcyByZWFjdGlvbnMu

Cg==

[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20dd1759b91cb1″ question_number=”213″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

Which molecule is synthesized at a ribosome?

[c]IEHCoC DCoCA=[Qq][c]IELCoCDCoCA=[Qq][c]IEPCoCDCoCA=[Qq][c]IEQ=[Qq]
[f]IEV4Y2VsbGVudCEgTW9sZWN1bGUgMSBpcyBhIGNoYWluIG9mIGFtaW5vIGFjaWRzLiBJbiBsaXZpbmcgc3lzdGVtcywgYW1pbm8gYWNpZHMgKDEgYmVsb3cpIGFyZSBjb21iaW5lZCB0byBmb3JtIHByb3RlaW5zIGF0IHJpYm9zb21lcyAoMiBiZWxvdyku

Cg==[Qq]

[f]IE5vLiBCIGlzIGEgbnVjbGVvdGlkZS4gSGVyZSYjODIxNztzIGEgaGludC4gTG9vayBhdCB0aGUgZGlhZ3JhbSBiZWxvdy4gV2hhdCYjODIxNztzIDE/

Cg==

[Qq]

[f]IE5vLiBDIGlzIGEgcGhvc3Bob2xpcGlkLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBMb29rIGF0IHRoZSBkaWFncmFtIGJlbG93LiBXaGF0JiM4MjE3O3MgMT8=

Cg==

[Qq]

[f]IE5vLiBEIGlzIGEgdHJpZ2x5Y2VyaWRlLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBMb29rIGF0IHRoZSBkaWFncmFtIGJlbG93LiBXaGF0JiM4MjE3O3MgMT8=

Cg==

[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20db48047ae0b1″ question_number=”214″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

Which molecule above forms the key structural component of the cell membrane?

[c]IEE=[Qq]

[f]IE5vLiBBIHJlcHJlc2VudHMgYSBwb2x5cGVwdGlkZSBvciBwcm90ZWluLiBIZXJlJiM4MjE3O3MgYSBoaW50OiB0aGUgbW9sZWN1bGUgeW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIGlzIHR5cGUgb2YgbGlwaWQsIGFuZCBpdCBmb3JtcyBhIHN0cnVjdHVyZSBsaWtlIHRoZSBvbmUgYmVsb3cu

Cg==

[Qq]

[c]IEI=[Qq]

[f]IE5vLiBCIHJlcHJlc2VudHMgYSBudWNsZW90aWRlLCBhIG1vbm9tZXIgb2YgbnVjbGVpYyBhY2lkcy4gSGVyZSYjODIxNztzIGEgaGludDogdGhlIG1vbGVjdWxlIHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0eXBlIG9mIGxpcGlkLCBhbmQgaXQgZm9ybXMgYSBzdHJ1Y3R1cmUgbGlrZSB0aGUgb25lIGJlbG93Lg==

Cg==

[Qq]

[c]IE M=[Qq]

[f]IE5pY2Ugam9iLiBDIGlzIGEgcGhvc3Bob2xpcGlkLCB0aGUgYmFzaWMgc3RydWN0dXJhbCBjb21wb25lbnQgb2YgdGhlIGNlbGwmIzgyMTc7cyBtZW1icmFuZS4=[Qq]

[c]IEQ=[Qq]

[f]IE5vLCBidXQgeW91JiM4MjE3O3JlIG9uIHRoZSByaWdodCB0cmFjay4gRCBpcyBhIHRyaWdseWNlcmlkZSwgb25lIG9mIHR3byBsaXBpZHMgaW4gdGhpcyBzZXQgb2YgbW9sZWN1bGVzLiBUaGUgYW5zd2VyIGlzIHRoZSBvdGhlciBsaXBpZC4gV2hlbiBpdCYjODIxNztzIGluIHRoZSBtZW1icmFuZSwgaXQgZm9ybXMgYSBzdHJ1Y3R1cmUgbGlrZSB0aGUgb25lIGJlbG93Lg==

Cg==

[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20da24faac8cb1″ question_number=”215″] The diagrams below represent various types of biological molecules, or subunits of biological molecules.

Each of the molecules above has one or more subunits. Take one of these molecules (A, B, C and D). Using its subunits, you can transform it into ATP. Which one?

[c]IEE=[Qq]

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[c]IE I=[Qq]

[f]IFdheSB0byBnbyEgQXNzdW1pbmcgdGhlIHRoZSBzdWdhciBpbiBtb2xlY3VsZSBCIGlzIHJpYm9zZSAoYW5kIG5vdCBkZW94eXJpYm9zZSksIHRoZW4gYWRkaW5nIHR3byBtb3JlIHBob3NwaGF0ZSBncm91cHMgd291bGQgZ2l2ZSB5b3UgQVRQLg==

Cg==

[Qq]

[c]IEM=[Qq]

[f]IE5vLiBDIGlzIGEgcGhvc3Bob2xpcGlkLiBUaGUgbW9sZWN1bGUgdGhhdCB5b3UmIzgyMTc7cmUgbG9va2luZyBmb3IgaXMgYSBudWNsZW90aWRlLCBhIG1vbm9tZXIgb2YgbnVjbGVpYyBhY2lkcyBsaWtlIEROQSBvciBSTkEu[Qq]

[c]IEQ=[Qq]

[f]IE5vLiBEIGlzIGEgdHJpZ2x5Y2VyaWRlLCB0aGUga2luZCBvZiBtb2xlY3VsZSB0aGF0IG1ha2VzIHVwIGZhdHMgb3Igb2lscy4gSGVyZSYjODIxNztzIGEgaGludDogQVRQIHN0YW5kcyBmb3IgJiM4MjIwO2FkZW5vc2luZSB0cmlwaG9zcGhhdGUuJiM4MjIxOw==[Qq]

[q json=”true” multiple_choice=”true” unit=”2.Cell Structure and Function” dataset_id=”dk MC dataset2|20d927319c78b1″ question_number=”216″] KDEL is a short polypeptide sequence consisting of four amino acids (lysine, aspartic acid, glutamic acid, and leucine). As certain proteins are being synthesized and/or modified, KDEL binds with a specific receptor. This receptor, in turn, prevents the protein from being secreted in a vesicle for further modification.

Based on this description, the KDEL receptor is most likely found in the

[c]IFBsYXNtYSBtZW1icmFuZQ==[Qq]

[f]IE5vLiBUYWtlIGEgbG9vayBhdCB0aGUgZGlhZ3JhbSBiZWxvdy4gVGhlIG9ubHkgd2F5IHRoYXQgYSBwcm90ZWluIGlzIGdvaW5nIHRvIGdldCB0byB0aGUgbWVtYnJhbmUgd291bGQgYmUgdGhyb3VnaCBhIHZlc2ljbGUgKHN1Y2ggYXMgdGhlIG9uZXMgYXQgNiBvciA0IGJlbG93KS4gVXNpbmcgdGhlIGRpYWdyYW0sIHNlZSBpZiB5b3UgY2FuIGZpbmQgYSBsb2NhdGlvbiB3aGVyZSBwcm90ZWlucyBhcmUgc3ludGhlc2l6ZWQgb3IgbW9kaWZpZWQgYmVmb3JlIHRoZXkgd291bGQgYmUgaW5jb3Jwb3JhdGVkIGludG8gYSB2ZXNpY2xlLiBUaGF0JiM4MjE3O3Mgd2hlcmUgeW91IG1pZ2h0IGZpbmQgdGhlIEtERUwgcmVjZXB0b3Iu

Cg==

[Qq]

[c]IEN5dG9zb2w=[Qq]

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Cg==

[Qq]

[c]IEVuZG9wbGFzbWlj IHJldGljdWx1bQ==[Qq]

[f]IEV4Y2VsbGVudCEgQmFzZWQgb24gdGhlIGRlc2NyaXB0aW9uIGFib3ZlLCBpdCBzb3VuZHMgbGlrZSB0aGlzIGlzIGEgcHJvdGVpbiB0aGF0JiM4MjE3O3MgZ29pbmcgdG8gYmUgZG9ja2VkIGF0IGEgcmVjZXB0b3IgaW4gdGhlIEVSLg==[Qq]

[c]IE1pdG9jaG9uZHJpYQ==[Qq]

[f]IE5vLiBUaGlzIGRvZXNuJiM4MjE3O3Qgc291bmQgbGlrZSBhIHByb2Nlc3MgdGhhdCB3b3VsZCBpbnZvbHZlIHRoZSBtaXRvY2hvbmRyaWEuIFVzaW5nIHRoZSBkaWFncmFtIGJlbG93LCBzZWUgaWYgeW91IGNhbiBmaW5kIGEgbG9jYXRpb24gd2hlcmUgcHJvdGVpbnMgYXJlIHN5bnRoZXNpemVkIG9yIG1vZGlmaWVkIA==YmVmb3JlIHRoZXkgd291bGQgYmUgaW5jb3Jwb3JhdGVkIGludG8gYSB2ZXNpY2xlIChzdWNoIGFzIHRoZSB2ZXNpY2xlcyBzaG93biBhdCA0IG9yIDYgYmVsb3cpLiBUaGF0JiM4MjE3O3Mgd2hlcmUgeW91IG1pZ2h0IGZpbmQgdGhlIEtERUwgcmVjZXB0b3Iu

Cg==

[Qq]

[q json=”true” multiple_choice=”true” unit=”2.Cell Structure and Function” dataset_id=”dk MC dataset2|20d814742160b1″ question_number=”217″] Which letter in the diagram below represents a ribosome?

[c]IEHCoCDCoCA=[Qq][c]IELCoCDCoCA=[Qq][c]IEPCoCDCoCA=[Qq][c]IETCoCDCoCA=[Qq][c]IE U=

Cg==[Qq]

[f]IE5vLiBBIGlzIHRoZSBSb3VnaCBFbmRvcGxhc21pYyBSZXRpY3VsdW0uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHdoYXQmIzgyMTc7cyBtYWtpbmcgaXQgcm91Z2g/[Qq]

[f]IE5vLiBCIHJlcHJlc2VudHMgYSBwcm90ZWluIChvciBhbm90aGVyIHN1YnN0YW5jZSkgdGhhdCYjODIxNztzIGJlZW4gZXhwb3J0ZWQgZnJvbSB0aGUgY2VsbC4gSGVyZSYjODIxNztzIGEgaGludDogdGhlIGFuc3dlciBpcyByZWZlcnJpbmcgdG8gdGhlIHBhcnRpY2xlcyB0aGF0IG1ha2UgdGhlIHJvdWdoIEUuUi4gcm91Z2gu[Qq]

[f]IE5vLiBDIGlzIGEgdmVzaWNsZSB0aGF0JiM4MjE3O3MgYnVkZGVkIG9mZiBvZiB0aGUgR29sZ2kgYXBwYXJhdHVzLkhlcmUmIzgyMTc7cyBhIGhpbnQ6IHRoZSBhbnN3ZXIgaXMgcmVmZXJyaW5nIHRvIHRoZSBwYXJ0aWNsZXMgdGhhdCBtYWtlIHRoZSByb3VnaCBFLlIuIHJvdWdoLg==[Qq]

[f]IE5vLiBEIGlzIHRoZSBHb2xnaSBBcHBhcmF0dXMuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHRoZSBhbnN3ZXIgaXMgcmVmZXJyaW5nIHRvIHRoZSBwYXJ0aWNsZXMgdGhhdCBtYWtlIHRoZSByb3VnaCBFLlIuIHJvdWdoLg==[Qq]

[f]IEZhbnRhc3RpYy4gRSByZWZlcnMgdG8gdGhlIGRvdHMgb24gdGhlIFJvdWdoIEVuZG9wbGFzbWljIHJldGljdWx1bS4gVGhlc2UgZG90cyAod2hpY2ggbWFrZSB0aGUgcm91Z2ggRS5SLiByb3VnaCkgYXJlIHJpYm9zb21lcy4=[Qq]

[q json=”true” multiple_choice=”true” unit=”2.Cell Structure and Function” dataset_id=”dk MC dataset2|20d49b0a6328b1″ question_number=”218″] Based on the structure of the cell below, it is most likely to

[c]IHVzZSBsaWdodCBlbmVyZ3kgdG8gY3JlYXRlIEFUUCBieSBwaG90b3Bob3NwaG9yeWxhdGlvbi4=[Qq]

[f]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[Qq]

[c]IHJlcXVpcmUgaGlnaCBsZX ZlbHMgb2Ygb3h5Z2VuLg==[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIG9yZ2FuZWxsZXMgdGhhdCBhcmUgZmlsbGluZyB1cCB0aGlzIGNlbGwgYXJlIG1pdG9jaG9uZHJpYS4gVGhlaXIga2V5IHJvbGUgaXMgQVRQIHByb2R1Y3Rpb24gdGhyb3VnaCBveGlkYXRpdmUgcGhvc3Bob3J5bGF0aW9uLCBhbmQgYSBjZWxsIHdpdGggdGhpcyBtYW55IG1pdG9jaG9uZHJpYSB3b3VsZCBuZWVkIGEgbG90IG9mIG94eWdlbi4=[Qq]

[c]IGNvbnZlcnQgY2FyYm9uIGRpb3hpZGUgaW50byBnbHVjb3Nl[Qq]

[f]IE5vLiBUaGF0IHdvdWxkIGJlIGEgZ3JlYXQgYW5zd2VyIGlmIHRoZSBjZWxsIHdlcmUgZnVsbCBvZiBjaGxvcm9wbGFzdHMsIGJlY2F1c2UgdGhhdCYjODIxNztzIGV4YWN0bHkgd2hhdCBoYXBwZW5zIGluIHRoZSBDYWx2aW4gQ3ljbGUgb2YgcGhvdG9zeW50aGVzaXMsIHdoZXJlIGNhcmJvbiBkaW94aWRlIGlzIGNoZW1pY2FsbHkgcmVkdWNlZCBpbnRvIHN1Z2Fycy4gSGVyZSYjODIxNztzIGEgaGludDogdGhlIG9yZ2FuZWxsZXMgZmlsbGluZyB1cCB0aGlzIGNlbGwgYXJlIG1pdG9jaG9uZHJpYS4=[Qq]

[c]IGJlIGEgbWF0dXJlIHJlZCBibG9vZCBjZWxsLg==[Qq]

[f]IE5vLiBBIG1hdHVyZSByZWQgYmxvb2QgY2VsbCBpcyBhbiBleHRyZW1lbHkgc3BlY2lhbGl6ZWQgYW5kIHNpbXBsaWZpZWQgY2VsbC4gSXQmIzgyMTc7cyBlc3NlbnRpYWxseSBhIG1lbWJyYW5lIGZpbGxlZCB3aXRoIHRoZSBveHlnZW4tY2FycnlpbmcgcHJvdGVpbiBoZW1vZ2xvYmluLiBSZWQgYmxvb2QgY2VsbHMgbGFjayBtb3N0IG9mIHRoZSBvcmdhbmVsbGVzIGZvdW5kIGluIHRoZSBvdGhlciBjZWxscyBvZiBhbmltYWxzLCBzdWNoIGFzIGEgbnVjbGV1cyBhbmQgbWl0b2Nob25kcmlhLiBBbmQgdGhhdCBpcyBhIGhpbnQgYXMgdG8gdGhlIGFuc3dlcjogdGhlIG9yZ2FuZWxsZXMgZmlsbGluZyB1cCB0aGlzIGNlbGwgYXJlIG1pdG9jaG9uZHJpYS4=[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20d3ab399a6cb1″ question_number=”219″] In the diagram below, the dots in cell “A” are most likely

[c]IFN1Y3Jvc2XCoCDCoCA=[Qq][c]IFN0YXJjaMKgIMKgIA==[Qq][c]IEdseWNvZ2VuwqAgwqAg[Qq][c]IEdsdWNvc2 XCoCDCoCA=[Qq][c]IGNlbGx1bG9zZQ==

Cg==[Qq]

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[f]IE5vLiBTdGFyY2ggaXMgYSBwb2x5c2FjY2hhcmlkZSwgYW5kIGl0JiM4MjE3O3MgdXNlZCBmb3IgbG9uZyB0ZXJtIGVuZXJneSBzdG9yYWdlLiBUaGUgY2VsbCBhdCBBIGlzIGZpbGxlZCB3aXRoIGNobG9yb3BsYXN0cywgd2hpY2ggYXJlIHBlcmZvcm1pbmcgcGhvdG9zeW50aGVzaXMuIFdoYXQgc3VnYXIgaXMgdGhlIGRpcmVjdCBwcm9kdWN0IG9mIHBob3Rvc3ludGhlc2lzPw==[Qq]

[f]IE5vLiBUaGUgbWFpbiBwcm9ibGVtIHdpdGggdGhpcyBjaG9pY2UgaXMgdGhhdCBnbHljb2dlbiBpcyBhIHBvbHlzYWNjaGFyaWRlIHRoYXQmIzgyMTc7cyBmb3VuZCBpbiBhbmltYWxzLiBGb3IgZXhhbXBsZSwgd2Ugc3RvcmUgZ2x5Y29nZW4gaW4gb3VyIGxpdmVycyB3aGVuIHdlIHRha2UgaW4gdG9vIG11Y2ggZ2x1Y29zZSBhbmQgbmVlZCB0byBzdG9yZSBpdCBhd2F5LiBUaGUgY2VsbCBhdCBBIGlzIGEgcGxhbnQgY2VsbCB0aGF0JiM4MjE3O3MgZmlsbGVkIHdpdGggY2hsb3JvcGxhc3RzLCB3aGljaCBhcmUgcGVyZm9ybWluZyBwaG90b3N5bnRoZXNpcy4gV2hhdCBzdWdhciBpcyB0aGUgcHJvZHVjdCBvZiBwaG90b3N5bnRoZXNpcz8=[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIGNlbGwgYXQgQSBpcyBhIHBsYW50IGNlbGwgdGhhdCYjODIxNztzIGZpbGxlZCB3aXRoIGNobG9yb3BsYXN0cywgd2hpY2ggYXJlIHBlcmZvcm1pbmcgcGhvdG9zeW50aGVzaXMsIGFuZCBjb252ZXJ0aW5nIGNhcmJvbiBkaW94aWRlIGFuZCB3YXRlciBpbnRvIGdsdWNvc2UgYW5kIG94eWdlbi4=[Qq]

[f]IE5vLiBDZWxsdWxvc2UgaXMgdGhlIHBvbHlzYWNjaGFyaWRlIHRoYXQgbWFrZXMgdXAgcGxhbnQgY2VsbCB3YWxscy4gVGhlIGNlbGwgYXQgQSBpcyBhIHBsYW50IGNlbGwgdGhhdCYjODIxNztzIGZpbGxlZCB3aXRoIGNobG9yb3BsYXN0cywgd2hpY2ggYXJlIHBlcmZvcm1pbmcgcGhvdG9zeW50aGVzaXMuIFdoYXQgc3VnYXIgaXMgdGhlIGRpcmVjdCBwcm9kdWN0IG9mIHBob3Rvc3ludGhlc2lzPw==[Qq]

[q json=”true” multiple_choice=”true” unit=”3.Cellular Energetics” dataset_id=”dk MC dataset2|20d269eb3184b1″ question_number=”220″] In the diagram below, which letter indicates a cell performing photosynthesis?

[c]IE E=[Qq]

[f]IEV4Y2VsbGVudC4gWW91IHByb2JhYmx5IG5vdGljZWQgdGhlIGNobG9yb3BsYXN0cywgYSBkZWFkIGdpdmVhd2F5IHRoYXQgdGhlIGNlbGwgaXMgcGVyZm9ybWluZyBwaG90b3N5bnRoZXNpcy4gTm90ZSBhbHNvLCB0aGF0IGFsbCB0aGUgYXJyb3dzIGFyZSBmbG93aW5nIGF3YXkgZnJvbSBjZWxsIEEsIHdoaWNoIGlzIGEgZm9vZCBwcm9kdWNpbmcgY2VsbCAocHJvYmFibHkgaW4gdGhlIGxlYWYgb2YgdGhpcyBwbGFudCk=[Qq]

[c]IEI=[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgaG93IHRvIHRoaW5rIGFib3V0IHRoaXMgcXVlc3Rpb24uIFRoZSBjZWxsIHRoYXQmIzgyMTc7cyBwZXJmb3JtaW5nIHBob3Rvc3ludGhlc2lzIHdpbGwgY29udGFpbiBjaGxvcm9wbGFzdHMsIGFuZCB3aWxsIGJlIHByb3ZpZGluZyBlbmVyZ3kgdG8gdGhlIHJlc3Qgb2YgdGhlIHBsYW50LiBXaGljaCBjZWxsIHNlZW1zIHRvIGJlIHRoZSBwcm9kdWNlciBpbiB0aGlzIHN5c3RlbT8=[Qq]

[c]IEM=[Qq]

[c]IEQ=[Qq]

[c]IEU=[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20d142394b68b1″ question_number=”221″] In the diagram below, which letter is where you’d most likely find starch?

[c]IEHCoCDCoCA=[Qq][c]IELCoCDCoCA=[Qq][c]IEPCoCDCoCA=[Qq][c]IETCoCDCoCA=[Qq][c]IE U=

Cg==[Qq]

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[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life”” dataset_id=”dk MC dataset2|20d0138b41a0b1″ question_number=”222″] In the diagram below, the walls of the cells are composed of

[c]IEdsdWNvc2Ug[Qq][c]IFN1Y3Jvc2Ug[Qq][c]IGNlbGx1 bG9zZSA=[Qq][c]IFN0YXJjaA==

Cg==[Qq]

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Cg==

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Cg==

[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20cf260e84c8b1″ question_number=”223″] Two islands are equivalent in size and shape. If one is closer to the mainland, the closer island would have

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[c]IGEgbG93ZXIgcmF0ZSBvZiBleHRpbmN0aW9uIHRoYW4gdGhlIGRpc3RhbnQgaXNsYW5kLg==[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20cdee104b70b1″ question_number=”224″] Which of the following land masses should have the lowest species richness?

[c]IEEgbGFyZ2UgaXNsYW5kIGZhciBmcm9tIGEgY29udGluZW50[Qq]

[f]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[Qq]

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[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20cce4a2ffe8b1″ question_number=”225″] Which of the following land masses should have the highest species richness?

[c]IEEgbGFyZ2UgaXNsYW5kIG 5lYXIgYSBjb250aW5lbnQ=[Qq]

[f]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[Qq]

[c]IEEgbGFyZ2UgaXNsYW5kIGZhciBmcm9tIHRoZSBuZWFyZXN0IGNvbnRpbmVudA==[Qq]

[f]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[Qq]

[c]IEEgc21hbGwgaXNsYW5kIGZhciBmcm9tIGEgY29udGluZW50[Qq]

[f]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[Qq]

[c]IEEgc21hbGwgaXNsYW5kIG5lYXIgYSBjb250aW5lbnQ=[Qq]

[f]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[Qq]

[q json=”true” multiple_choice=”true” unit=”7.Evolution” dataset_id=”dk MC dataset2|20cafbb13ee0b1″ question_number=”226″] The diagram below shows the results of an experiment in which swallowtail butterflies were collected from Alaska and Michigan. Each population was then bred in the laboratory at different temperatures (with all other environmental factors kept the same). At each temperature, the orange bar on the left represents the butterflies originating in Alaska, and the blue bar on the right indicates the butterflies originating in Michigan.

Which of the following is the best conclusion to draw from this experiment.

[c]IFRoZSBncm93dGggcmF0ZXMgYXJlIGRldGVybWluZWQgYnkgdGhlIGVudmlyb25tZW50Lg==[Qq]

[f]IE5vLiBOb3RlIHRoYXQgZm9yIGJvdGggdGhlIEFsYXNrYSBhbmQgTWljaGlnYW4gcG9wdWxhdGlvbnMsIHRoZSByZWxhdGl2ZSBncm93dGggcmF0ZSBpcyBzaWduaWZpY2FudGx5IGhpZ2hlciBhdCAyNMKwQy4gV2hpbGUgdGhhdCBpbmRpY2F0ZXMgdGhhdCwgYXQgbGVhc3QgdG8gc29tZSBleHRlbnQsIHRoZSBncm93dGggcmF0ZXMgYXJlIGVudmlyb25tZW50YWxseSBkZXRlcm1pbmVkLCBpdCBkb2VzbiYjODIxNzt0IGV4cGxhaW4gdGhlIA==ZGlmZmVyZW5jZXM=IGJldHdlZW4gdGhlIEFsYXNrYSBhbmQgTWljaGlnYW4gcG9wdWxhdGlvbnMu[Qq]

[c]IFRoZSBncm93dGggcmF0ZXMgYXJlIGdlbmV0aWNhbGx5IGRldGVybWluZWQu[Qq]

[f]IE5vLiBUaGVyZSYjODIxNztzIGNsZWFybHkgYSBnZW5ldGljIGluZmx1ZW5jZS4gT3RoZXJ3aXNlLCBob3cgY291bGQgeW91IGV4cGxhaW4gdGhlIGRpZmZlcmVuY2UgYmV0d2VlbiB0aGUgQWxhc2thIGFuZCBNaWNoaWdhbiBwb3B1bGF0aW9ucyB3aGVuIGdyb3duIGF0IHRoZSBzYW1lIHRlbXBlcmF0dXJlPyBCdXQgZ2VuZXRpY3MgY2FuJiM4MjE3O3QgYmUgdGhlIGVudGlyZSBzdG9yeSwgYmVjYXVzZSB5b3UgYWxzbyBoYXZlIHRvIGV4cGxhaW4gd2h5IGJvdGggcG9wdWxhdGlvbnMgZ3JvdyBmYXN0ZXIgYXQgMjTCsEMgdGhhbiB0aGV5IGRvIGF0IDEywrBDPyBMb29rIG92ZXIgdGhlIGNob2ljZXMgYWdhaW4gYW5kIGZpbmQgYSBiZXR0ZXIgYW5zd2VyLg==[Qq]

[c]IFRoZSBncm93dGggcmF0ZXMgZXhoaWJpdCBhIGdlbm 90eXBlL2Vudmlyb25tZW50IGludGVyYWN0aW9uLg==[Qq]

[f]IEV4Y2VsbGVudC4gQXMgd2l0aCBtb3N0IGJpb2xvZ2ljYWwgcGhlbm9tZW5hLCBwaGVub3R5cGUgZW1lcmdlcyBhcyBhIHJlc3VsdCBvZiBpbnRlcmFjdGlvbnMgYmV0d2VlbiB0aGUgZ2Vub3R5cGUgYW5kIHRoZSBlbnZpcm9ubWVudC4=[Qq]

[c]IFRoZSBncm93dGggcmF0ZXMgYXJlIGluZmx1ZW5jZWQgYnkgdGVtcGVyYXR1cmUu[Qq]

[f]IE5vLiBXaGlsZSB0ZW1wZXJhdHVyZSBoYXMgYW4gZWZmZWN0IG9uIGdyb3d0aCByYXRlLCBpdCBjYW4mIzgyMTc7dCBiZSB0aGUgZW50aXJlIHN0b3J5LiBUZW1wZXJhdHVyZSBhbG9uZSBkb2VzbiYjODIxNzt0IGV4cGxhaW4gd2h5IGF0IHRoZSBzYW1lIHRlbXBlcmF0dXJlLCB0aGUgQWxhc2thIHN3YWxsb3d0YWlscyBncm93IGF0IGEgZGlmZmVyZW50IHJhdGUgZnJvbSB0aGUgTWljaGlnYW4gc3dhbGxvd3RhaWxzLiBMb29rIG92ZXIgdGhlIGNob2ljZXMgYWdhaW4gYW5kIGZpbmQgYSBiZXR0ZXIgYW5zd2VyLg==[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20b69e9d3fc4b1″ question_number=”227″] The diagram below represents the carbon cycle.

Which number represents photosynthesis by land plants?

[c]IDHCoC DCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoCDCoCA=[Qq][c]IDTCoCDCoCA=[Qq][c]IDU=

Cg==[Qq]

[f]IE5pY2UgSm9iISAxIHNob3dzIGNhcmJvbiBtb3ZpbmcgZnJvbSB0aGUgYWlyIHRvIGdyZWVuIGxhbmQgcGxhbnRzLCBhbmQgdGhhdCBwcm9jZXNzIGhhcHBlbnMgdGhyb3VnaCBwaG90b3N5bnRoZXNpcy4=[Qq]

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHRoZSBhaXIuIFdoZW4gcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCB0aGV5JiM4MjE3O3JlIHBlcmZvcm1pbmcgY2VsbHVsYXIgcmVzcGlyYXRpb24uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHBob3Rvc3ludGhlc2lzIGludm9sdmVzIGNhcmJvbiBmaXhhdGlvbiwgYW5kIG1vdmVzIENP_MiA=ZnJvbSB0aGUgYWlyIGludG8gdGhlIGNhcmJvaHlkcmF0ZXMgdGhhdCBtYWtlIHVwIHBsYW50cy4gV2hlcmUgZG8geW91IHNlZSBhbiBhcnJvdyB0aGF0JiM4MjE3O3MgbW92aW5nIENP_[Qq]2into plants?

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBjYXJib24gbW92aW5nIGZyb20gYW5pbWFscyB0byB0aGUgYWlyLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgaW4gY2VsbHVsYXIgcmVzcGlyYXRpb24uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHBob3Rvc3ludGhlc2lzIGludm9sdmVzIGNhcmJvbiBmaXhhdGlvbiwgYW5kIG1vdmVzIENP_MiA=ZnJvbSB0aGUgYWlyIGludG8gdGhlIGNhcmJvaHlkcmF0ZXMgdGhhdCBtYWtlIHVwIHBsYW50cy4gV2hlcmUgZG8geW91IHNlZSBhbiBhcnJvdyB0aGF0JiM4MjE3O3MgbW92aW5nIENP_MiA=aW50byBwbGFudHM/[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgY29uc3VtcHRpb24uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHBob3Rvc3ludGhlc2lzIGludm9sdmVzIGNhcmJvbiBmaXhhdGlvbiwgYW5kIG1vdmVzIENP_MiA=ZnJvbSB0aGUgYWlyIGludG8gdGhlIGNhcmJvaHlkcmF0ZXMgdGhhdCBtYWtlIHVwIHBsYW50cy4gV2hlcmUgZG8geW91IHNlZSBhbiBhcnJvdyB0aGF0JiM4MjE3O3MgbW92aW5nIENP_MiA=aW50byBwbGFudHM/[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gZm9zc2lsIGZ1ZWxzIGJhY2sgaW50byB0aGUgYWlyLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgZHVyaW5nIGNvbWJ1c3Rpb24uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHBob3Rvc3ludGhlc2lzIGludm9sdmVzIGNhcmJvbiBmaXhhdGlvbiwgYW5kIG1vdmVzIENP_MiA=ZnJvbSB0aGUgYWlyIGludG8gdGhlIGNhcmJvaHlkcmF0ZXMgdGhhdCBtYWtlIHVwIHBsYW50cy4gV2hlcmUgZG8geW91IHNlZSBhbiBhcnJvdyB0aGF0JiM4MjE3O3MgbW92aW5nIENP_MiA=aW50byBwbGFudHM/[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20b574974dc4b1″ question_number=”228″] The diagram below represents the carbon cycle.

Which number represents respiration by land plants?

[c]IDHCoCDCoCA=[Qq][c]IDLCoC DCoCA=[Qq][c]IDPCoCDCoCA=[Qq][c]IDTCoCDCoCA=[Qq][c]IDU=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gdGhlIGFpciB0byBncmVlbiBsYW5kIHBsYW50cywgYW5kIHRoYXQgcHJvY2VzcyBoYXBwZW5zIHRocm91Z2ggcGhvdG9zeW50aGVzaXMuIFlvdSYjODIxNztyZSBsb29raW5nIGZvciBhIHByb2Nlc3MgaW4gd2hpY2ggcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCByZXR1cm5pbmcgaXQgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[f]IE5pY2UhIE51bWJlciAyIHNob3dzIGNhcmJvbiBtb3ZpbmcgZnJvbSBwbGFudHMgdG8gdGhlIGFpci4gV2hlbiBwbGFudHMgcmVsZWFzZSBDTw==_Mg==LCB0aGV5JiM4MjE3O3JlIHBlcmZvcm1pbmcgY2VsbHVsYXIgcmVzcGlyYXRpb24u[Qq]

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBjYXJib24gbW92aW5nIGZyb20gYW5pbWFscw==IHRvIHRoZSBhaXIsIHNvIHlvdSYjODIxNzt2ZSBmb3VuZCBjZWxsdWxhciByZXNwaXJhdGlvbi4gTm93IHlvdSBqdXN0IG5lZWQgdG8gZmluZCBpdCBpbiBwbGFudHMu[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgY29uc3VtcHRpb24uIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBhIHByb2Nlc3MgaW4gd2hpY2ggcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCByZXR1cm5pbmcgaXQgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gZm9zc2lsIGZ1ZWxzIGJhY2sgaW50byB0aGUgYWlyLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgZHVyaW5nIGNvbWJ1c3Rpb24uSGVyZSYjODIxNztzIGEgaGludDogeW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIGEgcHJvY2VzcyBpbiB3aGljaCBwbGFudHMgcmVsZWFzZSBDTw==_Mg==LCByZXR1cm5pbmcgaXQgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20b4896e9cd0b1″ question_number=”229″] The diagram below represents the carbon cycle.

Which number would represent a cow eating grass.

[c]IDHCoCDCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoCDCoCA=[Qq][c]IDTCoC DCoCA=[Qq][c]IDU=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gdGhlIGFpciB0byBncmVlbiBsYW5kIHBsYW50cywgYW5kIHRoYXQgaGFwcGVucyB0aHJvdWdoIHBob3Rvc3ludGhlc2lzLiBZb3UmIzgyMTc7cmUgbG9va2luZyBmb3IgY29uc3VtcHRpb24=OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBwbGFudHMgdG8gYW5pbWFscy4=[Qq]

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHRoZSBhaXIuIFdoZW4gcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCB0aGV5JiM4MjE3O3JlIHBlcmZvcm1pbmcgY2VsbHVsYXIgcmVzcGlyYXRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29uc3VtcHRpb24=OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBwbGFudHMgdG8gYW5pbWFscy4=[Qq]

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBjYXJib24gbW92aW5nIGZyb20gYW5pbWFscw==IHRvIHRoZSBhaXIsIHNvIHlvdSYjODIxNzt2ZSBmb3VuZCBjZWxsdWxhciByZXNwaXJhdGlvbi4gWW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIA==Y29uc3VtcHRpb24=OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBwbGFudHMgdG8gYW5pbWFscy4=[Qq]

[f]IFRlcnJpZmljLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgY29uc3VtcHRpb24u[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gZm9zc2lsIGZ1ZWxzIGJhY2sgaW50byB0aGUgYWlyLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgZHVyaW5nIGNvbWJ1c3Rpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29uc3VtcHRpb24=OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBwbGFudHMgdG8gYW5pbWFscy4=[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20b35d149eecb1″ question_number=”230″] The diagram below represents the carbon cycle.

Which number would represent a lizard exhaling?

[c]IDHCoCDCoCA=[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoCDC oCDCoA==[Qq][c]IDTCoCDCoCA=[Qq][c]IDU=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gdGhlIGFpciB0byBncmVlbiBsYW5kIHBsYW50cywgYW5kIHRoYXQgcHJvY2VzcyBoYXBwZW5zIHRocm91Z2ggcGhvdG9zeW50aGVzaXMuIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=cmVzcGlyYXRpb24gYnkgYW5pbWFscw==OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBhbmltYWxzIGJhY2sgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHRoZSBhaXIuIFdoZW4gcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCB0aGV5JiM4MjE3O3JlIHBlcmZvcm1pbmcgY2VsbHVsYXIgcmVzcGlyYXRpb24uWW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIA==cmVzcGlyYXRpb24gYnkgYW5pbWFscw==IChhcyBvcHBvc2VkIHRvIHBsYW50cyk6IHRoZSBwcm9jZXNzIGJ5IHdoaWNoIGNhcmJvbiBtb3ZlcyBmcm9tIGFuaW1hbHMgYmFjayB0byB0aGUgYXRtb3NwaGVyZS4=[Qq]

[f]IEV4Y2VsbGVudCEgTnVtYmVyIDMgc2hvd3MgY2FyYm9uIG1vdmluZyBmcm9tIA==YW5pbWFscw==IHRvIHRoZSBhaXIsIHNvIHlvdSYjODIxNzt2ZSBmb3VuZCBhbmltYWwgcmVzcGlyYXRpb24u[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgY29uc3VtcHRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=cmVzcGlyYXRpb24gYnkgYW5pbWFscw==OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBhbmltYWxzIGJhY2sgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gZm9zc2lsIGZ1ZWxzIGJhY2sgaW50byB0aGUgYWlyLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgZHVyaW5nIGNvbWJ1c3Rpb24uWW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIA==cmVzcGlyYXRpb24gYnkgYW5pbWFscw==OiB0aGUgcHJvY2VzcyBieSB3aGljaCBjYXJib24gbW92ZXMgZnJvbSBhbmltYWxzIGJhY2sgdG8gdGhlIGF0bW9zcGhlcmUu[Qq]

[q json=”true” multiple_choice=”true” unit=”8.Ecology” dataset_id=”dk MC dataset2|20b271ebedf8b1″ question_number=”231″] The diagram below represents the carbon cycle.

Which number would represent a exhaust emitted from the tailpipe of a car?

[c]IDHCoCDCoCDCoA==[Qq][c]IDLCoCDCoCA=[Qq][c]IDPCoCDCoCDCoA==[Qq][c]IDTCoCDCoCDCoA==[Qq][c]ID U=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gdGhlIGFpciB0byBncmVlbiBsYW5kIHBsYW50cywgYW5kIHRoYXQgcHJvY2VzcyBoYXBwZW5zIHRocm91Z2ggcGhvdG9zeW50aGVzaXMuIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29tYnVzdGlvbiwgYW5kIHRoYXQgcHJvY2VzcyBvY2N1cnMgd2hlbiBmb3NzaWwgZnVlbHMgKGNvYWwsIG5hdHVyYWwgZ2FzLCBvciBvaWwvcGV0cm9sZXVtKSBhcmUgYnVybmVkLCByZWxlYXNpbmcgQ08=_MiA=YW5kIEg=_[Qq]2O as waste products.

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHRoZSBhaXIuIFdoZW4gcGxhbnRzIHJlbGVhc2UgQ08=_Mg==LCB0aGV5JiM4MjE3O3JlIHBlcmZvcm1pbmcgY2VsbHVsYXIgcmVzcGlyYXRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29tYnVzdGlvbiwgYW5kIHRoYXQgcHJvY2VzcyBvY2N1cnMgd2hlbiBmb3NzaWwgZnVlbHMgKGNvYWwsIG5hdHVyYWwgZ2FzLCBvciBvaWwvcGV0cm9sZXVtKSBhcmUgYnVybmVkLCByZWxlYXNpbmcgQ08=_[Qq]2and H₂O as waste products.

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBjYXJib24gbW92aW5nIGZyb20gYW5pbWFscw==IHRvIHRoZSBhaXIsIHNvIHlvdSYjODIxNzt2ZSBmb3VuZCBhbmltYWwgcmVzcGlyYXRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29tYnVzdGlvbiwgYW5kIHRoYXQgcHJvY2VzcyBvY2N1cnMgd2hlbiBmb3NzaWwgZnVlbHMgKGNvYWwsIG5hdHVyYWwgZ2FzLCBvciBvaWwvcGV0cm9sZXVtKSBhcmUgYnVybmVkLCByZWxlYXNpbmcgQ08=_[Qq]2and H₂O as waste products.

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgY29uc3VtcHRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciA=Y29tYnVzdGlvbiwgYW5kIHRoYXQgcHJvY2VzcyBvY2N1cnMgd2hlbiBmb3NzaWwgZnVlbHMgKGNvYWwsIG5hdHVyYWwgZ2FzLCBvciBvaWwvcGV0cm9sZXVtKSBhcmUgYnVybmVkLCByZWxlYXNpbmcgQ08=_MiA=YW5kIEg=_[Qq]2O as waste products.

[f]IEZhbnRhc3RpYy4gTnVtYmVyIDUgc2hvd3MgY2FyYm9uIG1vdmluZyBmcm9tIGZvc3NpbCBmdWVscyBiYWNrIGludG8gdGhlIGFpciwgd2hpY2ggaXMgd2hhdCBoYXBwZW5zIGR1cmluZyBjb21idXN0aW9uLg==[Qq]

[q json=”true” multiple_choice=”true” unit=”2.Cell Structure and Function” dataset_id=”dk MC dataset2|20b1433de430b1″ question_number=”232″] Which letter in the diagram below represents the rough endoplasmic reticulum?

[c]IEHCoCDC oCDCoA==[Qq][c]IELCoCDCoCDCoA==[Qq][c]IEPCoCDCoCA=[Qq][c]IETCoCDCoCA=[Qq][c]IEU=

Cg==[Qq]

[f]IE5pY2Ugam9iLiBBIHJlcHJlc2VudHMgdGhlIHJvdWdoIEUuUi4=[Qq]

[f]IE5vLiBCIGlzIGEgcHJvdGVpbiAob3Igb3RoZXIgc3Vic3RhbmNlKSB0aGF0JiM4MjE3O3MgYmVpbmcgZXhwb3J0ZWQgZnJvbSB0aGUgY2VsbCB0aHJvdWdoIGV4b2N5dG9zaXMu[Qq]

[f]IE5vLiBDIGlzIGEgdmVzaWNsZSwgbW92aW5nIHN1YnN0YW5jZXMgZnJvbSB0aGUgR29sZ2kgQXBwYXJhdHVzIHRvIChpbiB0aGlzIGNhc2UpIHRoZSBtZW1icmFuZS4=[Qq]

[f]IE5vLiBEIGlzIHRoZSBHb2xnaSBBcHBhcmF0dXMu[Qq]

[f]IE5vLiBFIHJlcHJlc2VudHMgdGhlIGNlbGwmIzgyMTc7cyByaWJvc29tZXMu[Qq]

[q json=”true” multiple_choice=”true” unit=”2.Cell Structure and Function” dataset_id=”dk MC dataset2|20b051190f90b1″ question_number=”233″] Which letter in the diagram below represents a vesicle?

[c]IEHCoCDCoCDCoA==[Qq][c]IELCoCDCoCA=[Qq][c]IEPCoC DCoCA=[Qq][c]IETCoCDCoCDCoA==[Qq][c]IEU=

Cg==[Qq]

[f]IE5vLiBMZXR0ZXIgQSByZXByZXNlbnRzIHRoZSByb3VnaCBFLlIu[Qq]

[f]IE5vLiBCIGlzIGEgcHJvdGVpbiAob3Igb3RoZXIgc3Vic3RhbmNlKSB0aGF0JiM4MjE3O3MgYmVpbmcgZXhwb3J0ZWQgZnJvbSB0aGUgY2VsbCB0aHJvdWdoIGV4b2N5dG9zaXMu[Qq]

[f]IE5pY2Ugam9iISBDIGlzIGEgdmVzaWNsZSwgbW92aW5nIHN1YnN0YW5jZXMgZnJvbSB0aGUgR29sZ2kgQXBwYXJhdHVzIHRvIChpbiB0aGlzIGNhc2UpIHRoZSBtZW1icmFuZS4=[Qq]

[f]IE5vLCBidXQgeW91JiM4MjE3O3JlIGNsb3NlLiBEIGlzIHRoZSBHb2xnaSBBcHBhcmF0dXMuIFRoZSBHb2xnaSBBcHBhcmF0dXMgYnVkcyBvZmYgdmVzaWNsZXMgYXMgaXQgc2VuZHMgbWF0ZXJpYWxzIHRvIHRoZSBtZW1icmFuZSBvciB0byBzcGVjaWZpYyBvcmdhbmVsbGVzLg==[Qq]

[f]IE5vLiBFIHJlcHJlc2VudHMgdGhlIGNlbGwmIzgyMTc7cyByaWJvc29tZXMu[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20af24bf11acb1″ question_number=”234″] Almost all enzymes are

[c]IGNhcmJvaHlkcmF0ZXMu[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBUaGUgbW9ub21lcnMgbWFraW5nIHVwIG1vc3QgZW56eW1lcyBhcmUgYW1pbm8gYWNpZHMu[Qq]

[c]IGxpcGlkcw==[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBUaGUgbW9ub21lcnMgbWFraW5nIHVwIG1vc3QgZW56eW1lcyBhcmUgYW1pbm8gYWNpZHMu[Qq]

[c]IHByb3 RlaW5z[Qq]

[f]IEV4Y2VsbGVudC4gQWxtb3N0IGFsbCBlbnp5bWVzIGFyZSBwcm90ZWlucy4gVGhlIGV4Y2VwdGlvbnMgYXJlIGEgZmV3IChleHRyZW1lbHkgaW1wb3J0YW50KSBSTkEgZW56eW1lcyAobGlrZSB0aGUgUk5BIGluIGEgcmlib3NvbWUsIHdoaWNoIGlzIHdoYXQgY2F0YWx5emVzIHRoZSByZWFjdGlvbnMgb2YgcHJvdGVpbiBzeW50aGVzaXMp[Qq]

[c]IG51Y2xlaWMgYWNpZHM=[Qq]

[f]IE5vLCBidXQgeW91IG1hZGUgdGhlIHNlY29uZCBiZXN0IGNob2ljZS4gSXQmIzgyMTc7cyB0cnVlIHRoYXQgYSBmZXcsIGV4dHJlbWVseSBpbXBvcnRhbnQgZW56eW1lcyBhcmUgY29tcG9zZWQgb2YgbnVjbGVpYyBhY2lkcyAobGlrZSB0aGUgUk5BIGluIGEgcmlib3NvbWUsIHdoaWNoIGlzIHdoYXQgY2F0YWx5emVzIHRoZSByZWFjdGlvbnMgb2YgcHJvdGVpbiBzeW50aGVzaXMpLiBCdXQgbW9zdCBlbnp5bWVzIGFyZSBtYWRlIG9mIHNvbWV0aGluZyBlbHNlLiBIZXJlJiM4MjE3O3MgYSBoaW50LiBUaGUgbW9ub21lcnMgbWFraW5nIHVwIG1vc3QgZW56eW1lcyBhcmUgYW1pbm8gYWNpZHMu[Qq]

[q json=”true” multiple_choice=”true” unit=”3.Cellular Energetics” dataset_id=”dk MC dataset2|20ae26f60198b1″ question_number=”235″] During cellular respiration, this compound is generated by glycolysis, the Krebs cycle, and chemiosmosis.

[c]IENhcmJvaHlkcmF0ZQ==[Qq]

[f]IE5vLiBXaGF0IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0aGUgbW9tZW50LXRvLW1vbWVudCBlbmVyZ3kgc291cmNlIG9mIHRoZSB0aGUgY2VsbC4=[Qq]

[c]IExpcGlk[Qq]

[f]IE5vLiBXaGF0IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0aGUgbW9tZW50LXRvLW1vbWVudCBlbmVyZ3kgc291cmNlIG9mIHRoZSB0aGUgY2VsbC4=[Qq]

[c]IEFU UA==[Qq]

[f]IEV4Y2VsbGVudC4gQVRQIChhZGVub3NpbmUgdHJpcGhvc3BoYXRlKSBpcyB0aGUgY2VsbCYjODIxNztzIG1vbWVudC10by1tb21lbnQgZW5lcmd5IHNvdXJjZSwgYW5kIGl0JiM4MjE3O3MgY3JlYXRlZCBkdXJpbmcgZ2x5Y29seXNpcywgdGhlIEtyZWJzIGN5Y2xlLCBhbmQgdGhyb3VnaCB0aGUgb3hpZGF0aXZlIHBob3NwaG9yeWxhdGlvbiByZWFjdGlvbnMgcG93ZXJlZCBieSBjaGVtaW9zbW9zaXMu[Qq]

[c]IFByb3RlaW4=[Qq]

[f]IE5vLiBXaGF0IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0aGXCoG1vbWVudC10by1tb21lbnTCoGVuZXJneSBzb3VyY2Ugb2YgdGhlIHRoZSBjZWxsLg==[Qq]

[c]IE51Y2xlaWMgYWNpZA==[Qq]

[f]IE5vLiBXaGF0IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0aGXCoG1vbWVudC10by1tb21lbnTCoGVuZXJneSBzb3VyY2Ugb2YgdGhlIHRoZSBjZWxsLg==[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20acce5f21c8b1″ question_number=”236″] Includes DNA and RNA.

[c]IENhcmJvaHlkcmF0ZXM=[Qq]

[f]IE5vLiBDYXJib2h5ZHJhdGVzIGluY2x1ZGUgc2ltcGxlIHN1Z2FycyAobW9ub3NhY2NoYXJpZGVzIGFuZCBkaXNhY2NoYXJpZGVzIGxpa2UgZ2x1Y29zZSBhbmQgc3Vjcm9zZSwgcmVzcGVjdGl2ZWx5KSwgYW5kIHBvbHlzYWNjaGFyaWRlcyBsaWtlIGNlbGx1bG9zZSBhbmQgc3RhcmNoLiBIZXJlJiM4MjE3O3MgYSBoaW50OiB3aGF0IGRvZXMgdGhlICYjODIyMDtBJiM4MjIxOyBpbiBETkEgYW5kIFJOQSBzdGFuZCBmb3I/[Qq]

[c]IE51Y2xlaW MgYWNpZHM=[Qq]

[f]IE5pY2Ugam9iISBETkEgYW5kIFJOQSBhcmUgbnVjbGVpYyBhY2lkcyAoZGVveHlyaWJvbnVjbGVpYyBhY2lkIGFuZCByaWJvbnVjbGVpYyBhY2lkLCByZXNwZWN0aXZlbHkpLg==[Qq]

[c]IExpcGlkcw==[Qq]

[f]IE5vLiBMaXBpZHMgaW5jbHVkZSBmYXRzLCBvaWxzLCBwaG9zcGhvbGlwaWRzLCBhbmQgd2F4ZXMuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHdoYXQgZG9lcyB0aGUgJiM4MjIwO0EmIzgyMjE7IGluIEROQSBhbmQgUk5BIHN0YW5kIGZvcj8=[Qq]

[c]IFByb3RlaW5z[Qq]

[f]IE5vLiBQcm90ZWlucyBhcmUgcG9seW1lcnMgb2YgYW1pbm8gYWNpZHMsIGFuZCBtYWtlIHVwIGV2ZXJ5dGhpbmcgZnJvbSBtdXNjbGUgdGlzc3VlIHRvIGVuenltZXMgdG8gZWdnIHdoaXRlcy4gSGVyZSYjODIxNztzIGEgaGludDogd2hhdCBkb2VzIHRoZSAmIzgyMjA7QSYjODIyMTsgaW4gRE5BIGFuZCBSTkEgc3RhbmQgZm9yPw==[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20abbdf5b294b1″ question_number=”237″] Which of the following includes molecules used for waterproofing, energy storage, and cell membranes?

[c]IENhcmJvaHlkcmF0ZXM=[Qq]

[f]IE5vLiBDYXJib2h5ZHJhdGVzIGluY2x1ZGUgc2ltcGxlIHN1Z2FycyAobW9ub3NhY2NoYXJpZGVzIGFuZCBkaXNhY2NoYXJpZGVzIGxpa2UgZ2x1Y29zZSBhbmQgc3Vjcm9zZSwgcmVzcGVjdGl2ZWx5KSwgYW5kIHBvbHlzYWNjaGFyaWRlcyBsaWtlIGNlbGx1bG9zZSBhbmQgc3RhcmNoLiBIZXJlJiM4MjE3O3MgYSBoaW50OiB0aGluayBvZiB0aGUgbGFzdCBwYXJ0IG9mIHRoZSBuYW1lIG9mIHRoZSBtb2xlY3VsZSBiZWxvdy4=

Cg==

[Qq]

[c]IExpcG lkcw==[Qq]

[f]IE5pY2Ugam9iLiBMaXBpZHMgaW5jbHVkZSBmYXRzLCBvaWxzLCBwaG9zcGhvbGlwaWRzLCBhbmQgd2F4ZXMsIGFuZCB0aGVpciBmdW5jdGlvbnMgaW5jbHVkZSB3YXRlcnByb29maW5nLCBlbmVyZ3kgc3RvcmFnZSwgYW5kIG1ha2luZyB1cCBjZWxsIG1lbWJyYW5lcy4=[Qq]

[c]IFByb3RlaW5z[Qq]

[f]IE5vLiBQcm90ZWlucyBhcmUgcG9seW1lcnMgb2YgYW1pbm8gYWNpZHMsIGFuZCBtYWtlIHVwIGV2ZXJ5dGhpbmcgZnJvbSBtdXNjbGUgdGlzc3VlIHRvIGVuenltZXMgdG8gZWdnIHdoaXRlcy4gSGVyZSYjODIxNztzIGEgaGludDogdGhpbmsgb2YgdGhlIGxhc3QgcGFydCBvZiB0aGUgbmFtZSBvZiB0aGUgbW9sZWN1bGUgYmVsb3cu

Cg==

[Qq]

[c]IE51Y2xlaWMgYWNpZHM=[Qq]

[f]IE5vLiBOdWNsZWljIGFjaWRzIGluY2x1ZGUgc3Vic3RhbmNlcyBsaWtlIEROQSBhbmQgUk5BIChkZW94eXJpYm9udWNsZWljIGFjaWQgYW5kIHJpYm9udWNsZWljIGFjaWQsIHJlc3BlY3RpdmVseSksIGFuZCB0aGVpciBmdW5jdGlvbiBpcyBpbmZvcm1hdGlvbiBzdG9yYWdlIGFuZCB0cmFuc2Zlci4gSGVyZSYjODIxNztzIGEgaGludDogdGhpbmsgb2YgdGhlIGxhc3QgcGFydCBvZiB0aGUgbmFtZSBvZiB0aGUgbW9sZWN1bGUgYmVsb3cu

Cg==

[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20aa60b6bafcb1″ question_number=”238″] Which one of the biomolecules listed below contains nitrogenous bases and phosphate groups?

[c]IENhcmJvaHlkcmF0ZXM=[Qq]

[f]IE5vLiBUaGUgbW9ub21lcnMgb2YgY2FyYm9oeWRyYXRlcyBhcmUgbW9ub3NhY2NoYXJpZGVzLCBvciBzaW1wbGUgc3VnYXJzLCB3aGljaCBoYXZlIG5laXRoZXIgbml0cm9nZW5vdXMgYmFzZXMgb3IgcGhvc3BoYXRlIGdyb3Vwcy4gSGVyZSYjODIxNztzIGEgaGludDogeW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIGEgY2xhc3Mgb2YgYmlvbG9naWNhbCBtb2xlY3VsZXMgdGhhdCBhcmUgbWFkZSBvdXQgb2YgbW9ub21lcnMgbGlrZSB0aGUgb25lcyBiZWxvdy4=
Cg==[Qq]

[c]IExpcGlkcw==[Qq]

[f]IE5vLiBMaXBpZHMgYXJlIG1hZGUgdXAgb2YgZmF0dHkgYWNpZHMgYW5kIG90aGVyIGNvbXBvbmVudHMuIE9uZSB0eXBlIG9mIGxpcGlkIChwaG9zcGhvbGlwaWRzLCB3aGljaCBtYWtlIHVwIGNlbGwgbWVtYnJhbmVzKSBkb2VzIGNvbnRhaW4gYSBwaG9zcGhhdGUgZ3JvdXAsIGJ1dCB5b3UmIzgyMTc7bGwgbmV2ZXIgZmluZCBuaXRyb2dlbm91cyBiYXNlcyBpbiBsaXBpZHMuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBhIGNsYXNzIG9mIGJpb2xvZ2ljYWwgbW9sZWN1bGVzIHRoYXQgYXJlIG1hZGUgb3V0IG9mIG1vbm9tZXJzIGxpa2UgdGhlIG9uZXMgYmVsb3c=
Cg==[Qq]

[c]IFByb3RlaW5z[Qq]

[f]IE5vLiBQcm90ZWlucyBhcmUgbWFkZSB1cCBvZiBhbWlubyBhY2lkcywgd2hpY2ggaGF2ZSBuZWl0aGVyIG5pdHJvZ2Vub3VzIGJhc2VzIG9yIHBob3NwaGF0ZSBncm91cHMuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBhIGNsYXNzIG9mIGJpb2xvZ2ljYWwgbW9sZWN1bGVzIHRoYXQgYXJlIG1hZGUgb3V0IG9mIG1vbm9tZXJzIGxpa2UgdGhlIG9uZXMgYmVsb3c=
Cg==[Qq]

[c]IE51Y2xlaW MgYWNpZHM=[Qq]

[f]IE5pY2Ugam9iISBOdWNsZWljIGFjaWRzIGFyZSBtYWRlIG91dCBvZiBudWNsZW90aWRlcywgd2hpY2ggY29uc2lzdCBvZiBhIGZpdmUgY2FyYm9uIHN1Z2FyLCBhIG5pdHJvZ2Vub3VzIGJhc2UsIGFuZCBhIHBob3NwaGF0ZSBncm91cC4=[Qq]

[q json=”true” multiple_choice=”true” unit=”1.Chemistry of Life” dataset_id=”dk MC dataset2|20a97339fe24b1″ question_number=”239″] Which of the following biomolecules makes up cell walls.

[c]IENhcmJvaH lkcmF0ZXM=[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIGNhcmJvaHlkcmF0ZSA=Y2VsbHVsb3NlIChzaG93biBiZWxvdykgaXMgdGhlIHByaW1hcnkgY29tcG9uZW50IG9mIGNlbGwgd2FsbHMuIA==[Qq]

[c]IExpcGlkcw==[Qq]

[f]IE5vLiBPbmUgdHlwZSBvZiBsaXBpZCAodGhlIHBob3NwaG9saXBpZCkgbWFrZXMgdXAgY2VsbCA=bWVtYnJhbmVzLCBidXQgbm90IGNlbGwgd2FsbHMuIEhlcmUmIzgyMTc7cyBhIGhpbnQ6IGhvdyB3b3VsZCB5b3UgY2xhc3NpZnkgdGhlIG1vbGVjdWxlIGJlbG93Pw==

Cg==

[Qq]

[c]IFByb3RlaW5z[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50OiBob3cgd291bGQgeW91IGNsYXNzaWZ5IHRoZSBtb2xlY3VsZSBiZWxvdz8=

Cg==

[Qq]

[c]IE51Y2xlaWMgYWNpZHM=[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBoaW50OiBob3cgd291bGQgeW91IGNsYXNzaWZ5IHRoZSBtb2xlY3VsZSBiZWxvdz8=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a849340c24b1″ question_number=”240″] The image below shows a food chain involving earthworms.

The term that best describes the earthworm’s ecological role is

[c]IHByb2R1Y2Vy[Qq]

[f]IE5vLiBJbiBhbiBlY29sb2dpY2FsIHNlbnNlLCBhIHByb2R1Y2VyIGlzIGEgcGxhbnQgKG9yIG90aGVyIG9yZ2FuaXNtIHRoYXQgZG9lcyBmb29kLXByb2R1Y2luZyBwaG90b3N5bnRoZXNpcykuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgYXBwbHkgd2hhdCB5b3UgbGVhcm4gdG8gdGhpcyBzYW1lIHF1ZXN0aW9uIHdoZW4geW91IHNlZSBpdCBhZ2Fpbi4=

Cg==

[Qq]

[c]IHByaW1hcnkg Y29uc3VtZXI=[Qq]

[f]IEV4Y2VsbGVudC4gVGhlIGVhcnRod29ybSBpcyBhIHByaW1hcnkgY29uc3VtZXIuIChOb3RlIGZyb20gTXIuIFc6IGlmIHlvdSB3ZXJlIHRoaW5raW5nIA==JiM4MjIwO0l0JiM4MjE3O3MgYSBkZWNvbXBvc2VyLA==JiM4MjIxOyB0aGVuIHlvdSB3ZXJlIGRvaW5nIHNvbWUgZ29vZCBiaW9sb2dpY2FsIHRoaW5raW5nLCB0aG91Z2ggdGhhdCBvYnZpb3VzbHkgd2FzbiYjODIxNzt0IGEgY2hvaWNlIGluIHRoaXMgcXVlc3Rpb24p[Qq]

[c]IHNlY29uZGFyeSBjb25zdW1lcg==[Qq]

[f]IE5vLiBBIHNlY29uZGFyeSBjb25zdW1lciBpcyBhbiBvcmdhbmlzbSB0aGF0IGVhdHMgYSBwcmltYXJ5IGNvbnN1bWVyICh3aGljaCBpcyBhbiBvcmdhbmlzbSB0aGF0IGVhdHMgYSBwcm9kdWNlcikuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgYXBwbHkgd2hhdCB5b3UmIzgyMTc7dmUgbGVhcm5lZCB0byB0aGlzIHF1ZXN0aW9uIHRoZSBuZXh0IHRpbWUgeW91IHNlZSBpdC4=

Cg==

[Qq]

[c]IFRoaXJkIGxldmVsICh0ZXJ0aWFyeSkgY29uc3VtZXIp[Qq]

[f]IE5vLiBBIHRlcnRpYXJ5IGNvbnN1bWVyIGlzIGFuIG9yZ2FuaXNtIHRoYXQgZWF0cyBhIHNlY29uZGFyeSBjb25zdW1lciAod2hpY2ggaXMgYW4gb3JnYW5pc20gdGhhdCBlYXRzIGEgcHJpbWFyeSBjb25zdW1lcikuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgYXBwbHkgd2hhdCB5b3UmIzgyMTc7dmUgbGVhcm5lZCB0byB0aGlzIHF1ZXN0aW9uIHRoZSBuZXh0IHRpbWUgeW91IHNlZSBpdC4=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a7446ed864b1″ question_number=”241″] The image below shows a food chain involving earthworms.

The secondary consumer in the system above is the

[c]IGJ1Y2t0aG9ybg==[Qq]

[f]IE5vLiBUaGUgYnVja3Rob3JuIGlzIGEgcHJvZHVjZXIuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgYXBwbHkgd2hhdCB5b3UmIzgyMTc7dmUgbGVhcm5lZCB0byB0aGlzIHF1ZXN0aW9uIHRoZSBuZXh0IHRpbWUgeW91IHNlZSBpdC4=

Cg==

[Qq]

[c]IGVhcnRod29ybQ==[Qq]

[f]IE5vLiBUaGUgZWFydGh3b3JtIGlzIGEgcHJpbWFyeSBjb25zdW1lci4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3csIGFuZCBhcHBseSB3aGF0IHlvdSYjODIxNzt2ZSBsZWFybmVkIHRvIHRoaXMgcXVlc3Rpb24gdGhlIG5leHQgdGltZSB5b3Ugc2VlIGl0Lg==

Cg==

[Qq]

[c]IGJsYWNr YmlyZA==[Qq]

[f]IE5pY2Ugam9iISBUaGUgYmxhY2tiaXJkIGlzIGEgc2Vjb25kYXJ5IGNvbnN1bWVyLg==[Qq]

[c]IGhhd2s=[Qq]

[f]IE5vLiBUaGUgaGF3ayBpcyBhIHRlcnRpYXJ5IGNvbnN1bWVyLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIGFwcGx5IHdoYXQgeW91JiM4MjE3O3ZlIGxlYXJuZWQgdG8gdGhpcyBxdWVzdGlvbiB0aGUgbmV4dCB0aW1lIHlvdSBzZWUgaXQu

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a605747b60b1″ question_number=”242″] The image below shows a food chain involving earthworms.

To measure the abundance of earthworms, researchers
*Placed sampling frames onto the ground.
*Poured a chemical solution onto the soil to cause the earthworms to come up to the surface.
*Waited and counted the earthworms.

Using this technique, the researchers compared the abundance of earthworms in four areas of soil, as shown in the graph below.

The LEAST convincing data point for the argument that removing plants reduced earthworm abundance is from the

[c]IEJ1Y2t0aG9ybiwgSnVseSAyMDA0[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBxdWljayBoaW50OiBsb29rIGF0IHRoZSBzaXplIG9mIHRoZSB0d28gYmFycyBmb3IgZWFjaCB0aW1lIHBlcmlvZCwgYW5kIGZvY3VzIG9uIHdoZXRoZXIgdGhlcmUmIzgyMTc7cyBhIHN0YXRpc3RpY2FsbHkgc2lnbmlmaWNhbnQgZGlmZmVyZW5jZSwgd2l0aCA=bm8gb3ZlcmxhcCBpbiB0aGUgZXJyb3IgYmFycw==LiBJZiB5b3UgbmVlZCBtb3JlLCBoZWxwLCBzY3JvbGwgZG93biBhbmQgY29udGludWUgcmVhZGluZyBiZWxvdy4=

Cg==

Jm5ic3A7

[Qq]

Notice that for the buckthorn in July, 2004, the gray bar (which indicates the mean earthworm abundance in the sampling area where plants were removed) is lower than the white bar (which is the earthworm abundance where the plants were not removed). In particular, notice that the error bars show no overlap, which means that the difference is statistically significant. That supports the idea that removing plants reduced earthworm abundance. Now, look at the rest of the time periods, and find the area where the error bars are overlapping.

[c]IEJ1Y2t0aG9ybiwgSnVseSAyMDA2[Qq]

Cg==

Jm5ic3A7

[Qq]

Notice that for the buckthorn in July, 2006, the gray bar (which indicates the mean earthworm abundance in the sampling area where plants were removed) is lower than the white bar (which is the earthworm abundance where the plants were not removed). In particular, notice that the error bars show no overlap, which means that the difference is statistically significant. That supports the idea that removing plants reduced earthworm abundance. Now, look at the rest of the time periods, and find the area where the error bars are overlapping.

[c]IEhvbmV5c3Vja2xl LCBKdWx5IDIwMDQ=[Qq]

[f]IE5pY2Ugam9iISBUaGUgb3ZlcmxhcCBpbiB0aGUgZXJyb3IgYmFycyBtYWtlcyB0aGUgSG9uZXlzdWNrbGUgSnVseSwgMjAwNCBkYXRhIHRoZSBsZWFzdCBjb252aW5jaW5nLg==[Qq]

[c]IEhvbmV5c3Vja2xlLCBKdWx5IDIwMDY=[Qq]

[f]IE5vLiBIZXJlJiM4MjE3O3MgYSBxdWljayBoaW50OiBsb29rIGF0IHRoZSBzaXplIG9mIHRoZSB0d28gYmFycyBmb3IgZWFjaCB0aW1lIHBlcmlvZCwgYW5kIGZvY3VzIG9uIHdoZXRoZXIgdGhlcmUmIzgyMTc7cyBhIHNpZ25pZmljYW50IGRpZmZlcmVuY2UsIHdpdGggbm8gb3ZlcmxhcCBpbiB0aGUgZXJyb3IgYmFycy4gSWYgeW91IG5lZWQgbW9yZSwgaGVscCwgc2Nyb2xsIGRvd24gYW5kIGNvbnRpbnVlIHJlYWRpbmcgYmVsb3cu

Cg==

Jm5ic3A7

Cg==

Tm90aWNlIHRoYXQgZm9yIHRoZSBob25leXN1Y2tsZSBpbiBKdWx5LCAyMDA2LCB0aGUgZ3JheSBiYXIgKHdoaWNoIGluZGljYXRlcyB0aGUgbWVhbiBlYXJ0aHdvcm0gYWJ1bmRhbmNlIGluIHRoZSBzYW1wbGluZyBhcmVhIHdoZXJlIHBsYW50cyB3ZXJlIHJlbW92ZWQpIGlzIGxvd2VyIHRoYW4gdGhlIHdoaXRlIGJhciAod2hpY2ggaXMgdGhlIGVhcnRod29ybSBhYnVuZGFuY2Ugd2hlcmUgdGhlIHBsYW50cyB3ZXJlIG5vdCByZW1vdmVkKS4gSW4gcGFydGljdWxhciwgbm90aWNlIHRoYXQgdGhlIA==[Qq]error bars show no overlap, which means that the difference is statistically significant. That supports the idea that removing plants reduced earthworm abundance. Now, look at the rest of the time periods, and find the area where the error bars are overlapping.

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a507ab6b4cb1″ question_number=”243″] In the food web below, which organism(s) is(are) both secondary consumer(s)
and tertiary consumer(s)?

[c]IEhlZGdlaG9nIGFuZCBIYXdr[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgdGhlIGhhd2ssIGJ1dCB0aGUgaGVkZ2Vob2cgaXMgcHVyZWx5IGEgc2Vjb25kYXJ5IGNvbnN1bWVyLiBGb3IgcmVmZXJlbmNlLCBzdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdy4=

Cg==

[Qq]

[c]IEJhZGdlciBhbmQgRm94[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgdGhlIGZveCwgYnV0IHRoZSBiYWRnZXIgaXMgcHVyZWx5IGEgc2Vjb25kYXJ5IGNvbnN1bWVyLiBGb3IgcmVmZXJlbmNlLCBzdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdy4=

Cg==

[Qq]

[c]IEZveCBhbm QgSGF3aw==[Qq]

[f]IFdheSB0byBnby4gVGhlIGZveCBhbmQgdGhlIGhhd2sgYXJlIHRoZSB0ZXJ0aWFyeSBjb25zdW1lcnMgaW4gdGhpcyBmb29kIHdlYiwgYW5kIHRoZXkgYXJlIGJvdGggYWxzbyBzZWNvbmRhcnkgY29uc3VtZXJzLg==[Qq]

[c]IEhhd2sgb25seQ==[Qq]

[f]IE5vLiBUaGUgaGF3ayBpcyBib3RoIGEgdGVydGlhcnkgY29uc3VtZXIgYW5kIGEgc2Vjb25kYXJ5IGNvbnN1bWVyLCBidXQgdGhlcmUmIzgyMTc7cyBvbmUgbW9yZS4=[Qq]

[c]IEZveCBvbmx5[Qq]

[f]IE5vLiBUaGUgZm94IGlzIGEgYm90aCBhIHNlY29uZGFyeSBhbmQgYSB0ZXJ0aWFyeSBjb25zdW1lciwgYnV0IHRoZXJlJiM4MjE3O3Mgb25lIG1vcmUu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a3b3bca344b1″ question_number=”244″] In the food web below, which organism(s) is(are) performing photophosphorylation?

[c]IEhlZGdlaG9nIGFuZCBIYXdr[Qq]

[f]IE5vLiBUaGUgZGV0YWlscyBvZiBwaG90b3Bob3NwaG9yeWxhdGlvbiBhcmUgc2hvd24gdGhlIGRpYWdyYW0gYmVsb3csIGF0IGxldHRlciBoLiBOb3RlIHRoYXQgbGlnaHQgKGF0IGEgYW5kIGQpIGlzIHBvd2VyaW5nIHRoZSBwcm9jZXNzICh3aGljaCBpcyB3aHkgaXQmIzgyMTc7cyA=cGhvdG8=cGhvc3Bob3J5bGF0aW9uKS4gV2hpY2ggb2YgdGhlIG9yZ2FuaXNtcyBpbiB0aGUgZm9vZCB3ZWIgYWJvdmUgaXMgY2FwYWJsZSBvZiB0YWtpbmcgbGlnaHQgZW5lcmd5IGFuZCBjb252ZXJ0aW5nIGl0IHRvIGNoZW1pY2FsIGVuZXJneT8=

Cg==

[Qq]

[c]IEJhZGdlciBhbmQgRm94[Qq]

Cg==

[Qq]

[c]IEZveCBhbmQgaGF3aw==[Qq]

Cg==

[Qq]

[c]IEdy YXNz[Qq]

[f]IEV4Y2VsbGVudC4gT25seSBwaG90b3N5bnRoZXRpYyBvcmdhbmlzbXMgcGVyZm9ybSBwaG90b3Bob3NwaG9yeWxhdGlvbiwgYW5kIHRoZSBvbmx5IHBob3Rvc3ludGhlc2l6aW5nIG9yZ2FuaXNtIGluIHRoZSBmb29kIHdlYiBhYm92ZSBpcyBncmFzcy4=[Qq]

[c]IEZveCBvbmx5[Qq]

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a2ba9baaf8b1″ question_number=”245″] In the food web below, which organism(s) is(are) performing oxidative phosphorylation?

[c]IEhlZGdlaG9nIGFuZCBIYXdr[Qq]

[f]IE5vLCBidXQgeW91ciBhbnN3ZXIgaXMgcGFydGx5IGNvcnJlY3QuIE94aWRhdGl2ZSBwaG9zcGhvcnlsYXRpb24gaW52b2x2ZXMgbWFraW5nIEFUUCAoc3RlcCA2LCBiZWxvdykgYXMgdGhlIG1pdG9jaG9uZHJpYWwgZWxlY3Ryb24gdHJhbnNwb3J0IGNoYWluICgyKSBwb3dlcnMgY2hlbWlvc21vc2lzICgzKSwgd2l0aCBveHlnZW4gYXMgdGhlIEVUQyYjODIxNztzIGZpbmFsIGVsZWN0cm9uIGFjY2VwdG9yICg1KS4gQXJlIHRoZXJlIGFueSBvcmdhbmlzbXMgaW4gdGhlIGZvb2Qgd2ViIGFib3ZlIHdobyBkb24mIzgyMTc7dCBwZXJmb3JtIHRoaXMgcHJvY2Vzcz8=

Cg==

[Qq]

[c]IEdyYXNzIG9ubHk=[Qq]

Cg==

[Qq]

[c]IEZveCBhbmQgaGF3aw==[Qq]

Cg==

[Qq]

[c]IEJlZXRsZXMsIFNsdWdzLCBhbmQgTWljZQ==[Qq]

Cg==

[Qq]

[c]IEFsbCBvZiB0 aGUgYWJvdmU=[Qq]

[f]IEV4Y2VsbGVudCEgQWxsIHRoZSBvcmdhbmlzbXMgYWJvdmUgcGVyZm9ybSBveGlkYXRpdmUgcGhvc3Bob3J5bGF0aW9uLiBVc2UgdGhpcyBhcyBhbiBvcHBvcnR1bml0eSB0byByZXZpZXcgdGhlIGRldGFpbHMgb2YgdGhpcyBwcm9jZXNzLCBhcyBzaG93biBpbiB0aGUgZGlhZ3JhbSBiZWxvdy4=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a18999954cb1″ question_number=”246″] In ecosystems, which of the following is true about lipid-soluble compounds such as DDT and methyl mercury?

[c]IFRoZXkgYXJlIGZvdW5kIGluIHRoZWlyIGhpZ2hlc3QgY29uY2VudHJhdGlvbnMgaW4gdGhlIGxvd2VzdCB0cm9waGljIGxldmVscy4=[Qq]

[f]IE5vLiBUaGlzIHF1ZXN0aW9uIGlzIGFib3V0IHRoZSBwaGVub21lbm9uIG9mIA==YmlvbG9naWNhbCBtYWduaWZpY2F0aW9uLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHlvdSBzaG91bGQgYmUgYWJsZSB0byBzZWUgd2hhdCBoYXBwZW5zIHRvIGxpcGlkLXNvbHVibGUgY29tcG91bmRzIHN1Y2ggYXMgRERUIGFuZCBtZXRoeWwgbWVyY3VyeSBhcyB0aGV5IG1vdmUgdGhyb3VnaCB0aGUgdHJvcGhpYyBsZXZlbHMgb2YgYW4gZWNvc3lzdGVtLg==

Cg==

[Qq]

[c]IFRoZXkgaW5jcmVhc2UgaW4gY29uY2VudHJhdGlvbiBh cyB0aGV5IG1vdmUgdXAgdGhyb3VnaCBmb29kIHdlYnMu[Qq]

[f]IFdheSB0byBnby4gQXMgeW91IGNsZWFybHkgdW5kZXJzdGFuZCwgbGlwaWQtc29sdWJsZSBjb21wb3VuZHMgc3VjaCBhcyBERFQgYW5kIG1ldGh5bCBtZXJjdXJ5IGluY3JlYXNlIGluIGNvbmNlbnRyYXRpb24gYXMgdGhleSBtb3ZlIHRocm91Z2ggdGhlIHRyb3BoaWMgbGV2ZWxzIG9mIGFuIGVjb3N5c3RlbS4=

Cg==

[Qq]

[c]IFRoZXkgYXJlIG1ldGFib2xpemVkIHdpdGggb3RoZXIgbGlwaWRzIGluIHByb2Nlc3NlcyBsaWtlIHRoZSBLcmVicyBjeWNsZS4=[Qq]

[f]IE5vLiBUaGlzIHF1ZXN0aW9uIGlzIGFib3V0IHRoZSBwaGVub21lbm9uIG9mIA==YmlvbG9naWNhbCBtYWduaWZpY2F0aW9uLiBMaXBpZC1zb2x1YmxlIGNvbXBvdW5kcyBzdWNoIGFzIEREVCBhbmQgbWV0aHlsIG1lcmN1cnkgYXJlbiYjODIxNzt0IG1ldGFib2xpemVkLiBSYXRoZXIsIHRoZXkgcGVyc2lzdCBpbiBib2R5IHRpc3N1ZXMuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgeW91IHNob3VsZCBiZSBhYmxlIHRvIHNlZSB3aGF0IGhhcHBlbnMgdG8gdGhlc2UgbGlwaWQtc29sdWJsZSBjb21wb3VuZHMgYXMgdGhleSBtb3ZlIHRocm91Z2ggdGhlIHRyb3BoaWMgbGV2ZWxzIG9mIGFuIGVjb3N5c3RlbS4=

Cg==

[Qq]

[c]IFRoZWlyIGNvbmNlbnRyYXRpb24gaW5jcmVhc2VzIGFzIGEgZnVuY3Rpb24gb2YgdGhlIHJhdGUgb2YgcGhvdG9zeW50aGVzaXMu[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgdGhlIGZhY3QgdGhhdCB0aGVzZSBzdWJzdGFuY2UgaW5jcmVhc2UgaW4gY29uY2VudHJhdGlvbiwgYnV0IHRoZSBpbmNyZWFzZSBpcyBub3QgY29ubmVjdGVkIHRvIHBob3Rvc3ludGhlc2lzLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHlvdSBzaG91bGQgYmUgYWJsZSB0byBzZWUgd2hhdCBoYXBwZW5zIHRvIHRoZXNlIGxpcGlkLXNvbHVibGUgY29tcG91bmRzIGFzIHRoZXkgbW92ZSB0aHJvdWdoIHRoZSB0cm9waGljIGxldmVscyBvZiBhbiBlY29zeXN0ZW0u

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20a099c8cc90b1″ question_number=”247″] Net primary productivity (NPP) is the

[c]IGVuZXJneSB1c2VkIGZvciBtYWludGVuYW5jZSBpbiBlYWNoIHRyb3BoaWMgbGV2ZWwu[Qq]

[f]IE5vLiBUaGlzIHF1ZXN0aW9uIGlzIHNlZWluZyBpZiB5b3UgY2FuIGRpc3Rpbmd1aXNoIGJldHdlZW4gTlBQIChuZXQgcHJpbWFyeSBwcm9kdWN0aXZpdHkpIGFuZCBHUFAgKGdyb3NzIHByaW1hcnkgcHJvZHVjdGl2aXR5KS4gVGhpbmsgYWJvdXQgZ3Jvc3MgcHJvZml0IGFuZCBuZXQgcHJvZml0IGluIGEgYnVzaW5lc3MuIFdoYXQmIzgyMTc7cyB0aGUgZGlmZmVyZW5jZT8gTm93IHRyYW5zbGF0ZSB0aGF0IHRvIGdyb3NzIGFuZCBuZXQgcHJvZHVjdGl2aXR5Lg==[Qq]

[c]IGVuZXJneSBhdmFpbGFibGUgdG 8gcHJpbWFyeSBjb25zdW1lcnMu[Qq]

[f]IEV4YWN0bHkuIE5ldCBwcmltYXJ5IHByb2R1Y3Rpdml0eSA9IEdyb3NzIHByaW1hcnkgcHJvZHVjdGl2aXR5ICYjODIxMTsgcmVzcGlyYXRpb24gKG9yIE5QUCA9IEdQUCAmIzgyMTE7IFIpLiBUaGF0IG1lYW5zIHRoYXQgaXQmIzgyMTc7cyB0aGUgaGFydmVzdGFibGUgZW5lcmd5IGF2YWlsYWJsZSB0byBwcmltYXJ5IGNvbnN1bWVycy4=[Qq]

[c]IGxpZ2h0IGVuZXJneSB0aGF0IHByb2R1Y2VycyBjb252ZXJ0IGludG8gY2hlbWljYWwgZW5lcmd5Lg==[Qq]

[f]IE5vLiBUaGUgbGlnaHQgZW5lcmd5IHRoYXQgcHJvZHVjZXJzIGNvbnZlcnQgaW50byBjaGVtaWNhbCBlbmVyZ3kgaXMgZ3Jvc3MgcHJpbWFyeSBwcm9kdWN0aXZpdHkgKG9yIEdQUCkuIFRoaXMgcXVlc3Rpb24gaXMgc2VlaW5nIGlmIHlvdSBjYW4gZGlzdGluZ3Vpc2ggYmV0d2VlbiBOUFAgKG5ldCBwcmltYXJ5IHByb2R1Y3Rpdml0eSkgYW5kIEdQUCAoZ3Jvc3MgcHJpbWFyeSBwcm9kdWN0aXZpdHkpLiBUaGluayBhYm91dCBncm9zcyBwcm9maXQgYW5kIG5ldCBwcm9maXQgaW4gYSBidXNpbmVzcy4gV2hhdCYjODIxNztzIHRoZSBkaWZmZXJlbmNlPyBOb3cgdHJhbnNsYXRlIHRoYXQgdG8gZ3Jvc3MgYW5kIG5ldCBwcm9kdWN0aXZpdHku[Qq]

[c]IG51bWJlciBvZiBvZmZzcHJpbmcgcHJvZHVjZWQgYnkgZmVydGlsZSBtZW1iZXJzIG9mIHRoZSBwb3B1bGF0aW9uLg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209f45da0488b1″ question_number=”248″] The diagram below shows nitrogen flow in a field of wheat. The figures are in kilograms of nitrogen per hectare per year.

If number 3 represents an input of nitrogen-rich fertilizer, which number represents nitrogen-fixing soil bacteria?

[c]IDE=[Qq]

[c]ID I=[Qq]

[c]IDQ=[Qq]

[c]IDU=[Qq]

[c]IDY=[Qq]
[f]IE5vLiBOdW1iZXIgMSBpcyBzaG93aW5nIG5pdHJvZ2VuIG1vdmluZyA=b3V0IG9mIHRoZSBzeXN0ZW0uIE5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhIHdvdWxkIG1vdmUgbml0cm9nZW4gaW50bw==IHRoZSBzeXN0ZW0uIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LiBSZW1lbWJlciB0aGF0IHRoZSBjcm9wIHVuZGVyIGNvbnNpZGVyYXRpb24gaW4gdGhpcyBxdWVzdGlvbiBpcyB3aGVhdCAod2hpY2ggZG9lc24mIzgyMTc7dCBoYXZlIG5pdHJvZ2VuIGZpeGluZyBiYWN0ZXJpYSBpbiBpdHMgcm9vdHMpLCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGljaCBwYXJ0IGluIHRoZSBkaWFncmFtIGFib3ZlIGNvdWxkIGJlIG5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhLg==

[Qq]

[f]IEV4Y2VsbGVudC4gTnVtYmVyIDIgaXMgbW92aW5nIG5pdHJvZ2VuIA==aW50bw==IHRoZSBzeXN0ZW0uIFRoZSBvdGhlciBpbnB1dCBvZiBuaXRyb2dlbiAoYXQgbnVtYmVyIDMpIGlzbiYjODIxNzt0IGEgY2hvaWNlLCBzbyBudW1iZXIgMiBoYXMgdG8gYmUgbml0cm9nZW4tZml4aW5nIHNvaWwgYmFjdGVyaWEu[Qq]

[f]IE5vLiBOdW1iZXIgNCBpcyBtb3Zpbmcgbml0cm9nZW4gb3V0IG9mIHRoZSBzeXN0ZW0uIE5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhIHdvdWxkIG1vdmUgbml0cm9nZW4gaW50bw==IHRoZSBzeXN0ZW0uIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LiBSZW1lbWJlciB0aGF0IHRoZSBjcm9wIHVuZGVyIGNvbnNpZGVyYXRpb24gaW4gdGhpcyBxdWVzdGlvbiBpcyB3aGVhdCAod2hpY2ggZG9lc24mIzgyMTc7dCBoYXZlIG5pdHJvZ2VuIGZpeGluZyBiYWN0ZXJpYSBpbiBpdHMgcm9vdHMpLCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGljaCBwYXJ0IGluIHRoZSBkaWFncmFtIGFib3ZlIGNvdWxkIGJlIG5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhLg==

[Qq]

[f]IE5vLiBOdW1iZXIgNSBpcyBzaG93aW5nIG5pdHJvZ2VuIG1vdmluZyBmcm9tIHRoZSBzb2lsIGludG8gdGhlIGNyb3AsIGEgcHJvY2VzcyB0aGF0IGlzIGNhbGxlZCA=YXNzaW1pbGF0aW9uLiBOaXRyb2dlbi1maXhpbmcgc29pbCBiYWN0ZXJpYSB3b3VsZCBtb3ZlIG5pdHJvZ2VuIA==aW50bw==IHRoZSBzeXN0ZW0uIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LiBSZW1lbWJlciB0aGF0IHRoZSBjcm9wIHVuZGVyIGNvbnNpZGVyYXRpb24gaW4gdGhpcyBxdWVzdGlvbiBpcyB3aGVhdCAod2hpY2ggZG9lc24mIzgyMTc7dCBoYXZlIG5pdHJvZ2VuIGZpeGluZyBiYWN0ZXJpYSBpbiBpdHMgcm9vdHMpLCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGljaCBwYXJ0IGluIHRoZSBkaWFncmFtIGFib3ZlIGNvdWxkIGJlIG5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhLg==

[Qq]

[f]IE5vLiBOdW1iZXIgNiBpcyBzaG93aW5nIG5pdHJvZ2VuIGZyb20gdGhlIGNyb3AgbW92aW5nIGJhY2sgdG8gdGhlIHNvaWwsIGEgcHJvY2VzcyBrbm93biBhcyBhbW1vbmlmaWNhdGlvbi4gTml0cm9nZW4tZml4aW5nIHNvaWwgYmFjdGVyaWEgd291bGQgbW92ZSBuaXRyb2dlbiA=aW50bw==IHRoZSBzeXN0ZW0uIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LiBSZW1lbWJlciB0aGF0IHRoZSBjcm9wIHVuZGVyIGNvbnNpZGVyYXRpb24gaW4gdGhpcyBxdWVzdGlvbiBpcyB3aGVhdCAod2hpY2ggZG9lc24mIzgyMTc7dCBoYXZlIG5pdHJvZ2VuIGZpeGluZyBiYWN0ZXJpYSBpbiBpdHMgcm9vdHMpLCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGljaCBwYXJ0IGluIHRoZSBkaWFncmFtIGFib3ZlIGNvdWxkIGJlIG5pdHJvZ2VuLWZpeGluZyBzb2lsIGJhY3RlcmlhLg==

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209e4a650058b1″ question_number=”249″] The diagram below shows nitrogen flow in a field of wheat. The figures are in kilograms of nitrogen per hectare per year.

Which number represents assimilation?

[c]IDI=[Qq]

[c]IDM=[Qq]

[c]IDQ=[Qq]

[c]ID U=[Qq]

[c]IDY=[Qq]
[f]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

Cg==

Cg==[Qq]

[f]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

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNCBpcyBzaG93aW5nIG5pdHJvZ2VuIGxlYXZpbmcgdGhlIHNvaWwgKGFuZCB0aGUgc3lzdGVtIGFzIGEgd2hvbGUpLiBBc3NpbWlsYXRpb24gaW52b2x2ZXMgcGxhbnRzIHRha2luZyB1cCBuaXRyb2dlbiBhcyB0aGV5IGluY29ycG9yYXRlIGl0IGludG8gdGhlaXIgbml0cm9nZW4tY29udGFpbmluZyBtb2xlY3VsZXMsIHN1Y2ggYXMgcHJvdGVpbnMgYW5kIG51Y2xlaWMgYWNpZHMuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93IGFuZCBzZWUgaWYgeW91IGNhbiBpZGVudGlmeSB3aGljaCBwYXJ0IG9mIHRoZSBkaWFncmFtIGFib3ZlIHJlcHJlc2VudHMgYXNzaW1pbGF0aW9uLg==

Cg==

[Qq]

[f]IFRlcnJpZmljLiBOdW1icmVyIDUgc2hvd3Mgbml0cm9nZW4gbW92aW5nIGZyb20gdGhlIHNvaWwgdG8gdGhlIGNyb3AsIHdoaWNoIGlzIGV4YWN0bHkgd2hhdCBoYXBwZW5zIGR1cmluZyBhc3NpbWlsYXRpb24uIENoZWNrIHRoZSBkaWFncmFtIGJlbG93IGp1c3QgdG8gY29uZmlybSB5b3VyIHVuZGVyc3RhbmRpbmcu

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNiBpcyBzaG93aW5nIG5pdHJvZ2VuIG1vdmluZyBmcm9tIHBsYW50cyBiYWNrIHRvIHRoZSBzb2lsLiBBc3NpbWlsYXRpb24gaW52b2x2ZXMgcGxhbnRzIHRha2luZyB1cCBuaXRyb2dlbiBmcm9tIHRoZSBzb2lsIGFzIHRoZXkgaW5jb3Jwb3JhdGUgaXQgaW50byB0aGVpciBuaXRyb2dlbi1jb250YWluaW5nIHBhcnRzLCBzdWNoIGFzIHByb3RlaW5zIGFuZCBudWNsZWljIGFjaWRzLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdyBhbmQgc2VlIGlmIHlvdSBjYW4gaWRlbnRpZnkgd2hpY2ggcGFydCBvZiB0aGUgZGlhZ3JhbSBhYm92ZSByZXByZXNlbnRzIGFzc2ltaWxhdGlvbi4=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209d1962eaacb1″ question_number=”250″] The diagram below shows nitrogen flow in a field of wheat. The figures are in kilograms of nitrogen per hectare per year.

Which number represents decomposition?

[c]IDLCoCDCoCA=[Qq][c]IDPCoCDCoCA=[Qq][c]IDTCoCDCoCA=[Qq][c]IDXCoCDCoCDCoA==[Qq][c]ID Y=[Qq]
[f]IE5vLiBOdW1iZXIgMiBzaG93cyBuaXRyb2dlbiBlbnRlcmluZyB0aGUgc3lzdGVtIGFuZCBiZWNvbWluZyBuaXRyYXRlIGluIHRoZSBzb2lsLiBUaGF0IGNvdWxkIGhhcHBlbiBhcnRpZmljaWFsbHksIHRocm91Z2ggZmVydGlsaXplciwgb3IgbmF0dXJhbGx5LCB0aHJvdWdoIG5pdHJvZ2VuIGZpeGF0aW9uIGJ5IHNvaWwgYmFjdGVyaWEuIERlY29tcG9zaXRpb24gd291bGQgbW92ZSBuaXRyb2dlbiBmcm9tIHBsYW50cyBiYWNrIHRvIHRoZSBzb2lsLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hlcmUgZGVjb21wb3NpdGlvbiBpcyBoYXBwZW5pbmcgaW4gdGhlIGRpYWdyYW0gYWJvdmUu

Cg==

Jm5ic3A7

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBuaXRyb2dlbiBlbnRlcmluZyB0aGUgc3lzdGVtIGFuZCBiZWNvbWluZyBuaXRyYXRlIGluIHRoZSBzb2lsLiBUaGF0IGNvdWxkIGhhcHBlbiBhcnRpZmljaWFsbHksIHRocm91Z2ggZmVydGlsaXplciwgb3IgbmF0dXJhbGx5LCB0aHJvdWdoIG5pdHJvZ2VuIGZpeGF0aW9uIGJ5IHNvaWwgYmFjdGVyaWEuIERlY29tcG9zaXRpb24gd291bGQgbW92ZSBuaXRyb2dlbiBmcm9tIHBsYW50cyBiYWNrIHRvIHRoZSBzb2lsLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hlcmUgZGVjb21wb3NpdGlvbiBpcyBoYXBwZW5pbmcgaW4gdGhlIGRpYWdyYW0gYWJvdmUu

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBuaXRyb2dlbiBsZWF2aW5nIHRoZSBzeXN0ZW0uIFRoYXQgY291bGQgaGFwcGVuIHRocm91Z2ggcnVub2ZmLCBvciB0aHJvdWdoIGRlbml0cmlmaWNhdGlvbi4gRGVjb21wb3NpdGlvbiB3b3VsZCBtb3ZlIG5pdHJvZ2VuIGZyb20gcGxhbnRzIGJhY2sgdG8gdGhlIHNvaWwuIFN0dWR5IHRoZSBkaWFncmFtIGJlbG93LCBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGVyZSBkZWNvbXBvc2l0aW9uIGlzIGhhcHBlbmluZyBpbiB0aGUgZGlhZ3JhbSBhYm92ZS4=

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBuaXRyb2dlbiBtb3ZpbmcgZnJvbSB0aGUgc29pbCBpbnRvIHBsYW50cywgYSBwcm9jZXNzIGNhbGxlZCBhc3NpbWlsYXRpb24uIERlY29tcG9zaXRpb24gd291bGQgbW92ZSBuaXRyb2dlbiBmcm9tIHBsYW50cyBiYWNrIHRvIHRoZSBzb2lsLiBTdHVkeSB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hlcmUgZGVjb21wb3NpdGlvbiBpcyBoYXBwZW5pbmcgaW4gdGhlIGRpYWdyYW0gYWJvdmUu

Cg==

[Qq]

[f]IEV4Y2VsbGVudCEgTnVtYmVyIDYgc2hvd3MgZGVjb21wb3NpdGlvbi4gSWYgeW91IG5lZWQgdG8sIGNoZWNrIHRoZSBkaWFncmFtIGJlbG93IHRvIGNvbmZpcm0geW91ciB1bmRlcnN0YW5kaW5nLg==

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209c0da19340b1″ question_number=”251″] The diagram below shows nitrogen flow in a field of wheat. The figures are in kilograms of nitrogen per hectare per year.

“Leaching” is the loss of water-soluble nutrients from the soil. If number 1 represents loss of nitrogen caused by leaching, which number would have to represent denitrification?

[c]IDLCoCDCoCDCoA==[Qq][c]IDPCoCDCoCDCoA==[Qq][c]IDTCoCDC oCDCoA==[Qq][c]IDXCoCDCoCDCoA==[Qq][c]IDY=[Qq]
[f]IE5vLiBOdW1iZXIgMiBzaG93cyBhIA==Z2Fpbg==IG9mIG5pdHJvZ2VuLiBEZW5pdHJpZmljYXRpb24gKHdoaWNoIGhhcHBlbnMgd2hlbiBiYWN0ZXJpYSBjb252ZXJ0IG5pdHJhdGVzIGJhY2sgaW50byBuaXRyb2dlbiBnYXMpIHdvdWxkIGNvbnN0aXR1dGUgYSA=bG9zcw==IG9mIG5pdHJvZ2VuIGZyb20gdGhpcyB3aGVhdCBmaWVsZC4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3cgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hpY2ggbGV0dGVyIGFib3ZlIHdvdWxkIGJlIGRlbml0cmlmaWNhdGlvbi4=

[Qq]

[f]IE5vLiBOdW1iZXIgMyBzaG93cyBhIGdhaW4gb2Ygbml0cm9nZW4uIERlbml0cmlmaWNhdGlvbiAod2hpY2ggaGFwcGVucyB3aGVuIGJhY3RlcmlhIGNvbnZlcnQgbml0cmF0ZXMgYmFjayBpbnRvIG5pdHJvZ2VuIGdhcykgd291bGQgY29uc3RpdHV0ZSBhIA==bG9zcw==IG9mIG5pdHJvZ2VuIGZyb20gdGhpcyB3aGVhdCBmaWVsZC4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3cgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hpY2ggbGV0dGVyIGFib3ZlIHdvdWxkIGJlIGRlbml0cmlmaWNhdGlvbi4=

Cg==

[Qq]

[f]IEdvb2Qgam9iLiBOdW1iZXIgNCBzaG93cyBuaXRyb2dlbiBsZWF2aW5nIHRoZSBzeXN0ZW0sIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBpbiBkZW5pdHJpZmljYXRpb24uIEp1c3QgdG8gbWFrZSBzdXJlIHlvdSYjODIxNztyZSBzb2xpZCBvbiB0aGlzIGNvbmNlcHQsIGNvbm5lY3QgdGhlIGRlbml0cmlmaWNhdGlvbiBpbiB0aGUgZGlhZ3JhbSBhYm92ZSB3aXRoIHdoYXQmIzgyMTc7cyBzaG93biBiZWxvdy4=

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNSBzaG93cyBuaXRyb2dlbiBtb3ZpbmcgZnJvbSB0aGUgc29pbCB0byBwbGFudHMsIGEgcHJvY2VzcyBjYWxsZWQgYXNzaW1pbGF0aW9uLiBEZW5pdHJpZmljYXRpb24gKHdoaWNoIGhhcHBlbnMgd2hlbiBiYWN0ZXJpYSBjb252ZXJ0IG5pdHJhdGVzIGJhY2sgaW50byBuaXRyb2dlbiBnYXMpIHdvdWxkIGNvbnN0aXR1dGUgYSA=bG9zcw==IG9mIG5pdHJvZ2VuIGZyb20gdGhpcyB3aGVhdCBmaWVsZC4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3cgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hpY2ggbGV0dGVyIGFib3ZlIHdvdWxkIGJlIGRlbml0cmlmaWNhdGlvbi4=

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNiBzaG93cyBuaXRyb2dlbiBtb3ZpbmcgZnJvbSB0aGUgY3JvcCBiYWNrIGludG8gdGhlIHNvaWwsIGEgcHJvY2VzcyB0aGF0IGludm9sdmVzIGEgZGVjb21wb3NpdGlvbiBwcm9jZXNzIGNhbGxlZCBhbW1vbmlmaWNhdGlvbi4gRGVuaXRyaWZpY2F0aW9uICh3aGljaCBoYXBwZW5zIHdoZW4gYmFjdGVyaWEgY29udmVydCBuaXRyYXRlcyBiYWNrIGludG8gbml0cm9nZW4gZ2FzKSB3b3VsZCBjb25zdGl0dXRlIGEgbG9zcw==IG9mIG5pdHJvZ2VuIGZyb20gdGhpcyB3aGVhdCBmaWVsZC4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3cgYW5kIHNlZSBpZiB5b3UgY2FuIGZpZ3VyZSBvdXQgd2hpY2ggbGV0dGVyIGFib3ZlIHdvdWxkIGJlIGRlbml0cmlmaWNhdGlvbi4=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209abc06d71cb1″ question_number=”252″] The diagram below shows nitrogen flow in a field of wheat. The figures are in kilograms of nitrogen per hectare per year.

“Leaching” is the loss of water-soluble nutrients from the soil. If number 4 represents loss of nitrogen caused by denitrification, which number would have to represent leaching?

[c]IDHCoCDC oCDCoA==[Qq][c]IDLCoCDCoCDCoA==[Qq][c]IDPCoCDCoCDCoA==[Qq][c]IDXCoCDCoCDCoA==[Qq][c]IDY=

Cg==[Qq]

[f]IEV4Y2VsbGVudC4gSWYgbnVtYmVyIDQgcmVwcmVzZW50cyBkZW5pdHJpZmljYXRpb24sIHRoZW4gdGhlIG9ubHkgb3RoZXIgYXJyb3cgcHJvY2VzcyBtb3Zpbmcgbml0cm9nZW4gb3V0IG9mIHRoZSBzeXN0ZW0gaXMgbGVhY2hpbmcsIGF0IG51bWJlciAxLg==[Qq]
[f]IE5vLiBOdW1iZXIgMiBzaG93cyBhbiA=aW5wdXQ=IG9mIG5pdHJvZ2VuIGludG8gdGhpcyBzeXN0ZW0uIExlYWNoaW5nIGlzIGFuIA==b3V0cHV0Lg==[Qq]
[f]IE5vLiBOdW1iZXIgMyBzaG93cyBhbiA=aW5wdXQ=IG9mIG5pdHJvZ2VuIGludG8gdGhpcyBzeXN0ZW0uIExlYWNoaW5nIGlzIGFuIA==b3V0cHV0Lg==[Qq]
[f]IE5vLiBOdW1iZXIgNSBzaG93cyBuaXRyb2dlbiBtb3ZpbmcgZnJvbSB0aGUgc29pbCB0byB0aGUgcGxhbnRzIG1ha2luZyB1cCB0aGUgY3JvcCwgYSBwcm9jZXNzIGNhbGxlZCBhc3NpbWlsYXRpb24uIExlYWNoaW5nIGlzIGFuIG91dHB1dC4=[Qq]
[f]IE5vLiBOdW1iZXIgNiBzaG93cyBuaXRyb2dlbiBtb3ZpbmcgZnJvbSB0aGUgcGxhbnRzIGJhY2sgdG8gdGhlIHNvaWwsIGEgcHJvY2VzcyB0aGF0IGhhcHBlbnMgdGhyb3VnaCBhIHR5cGUgb2YgZGVjb21wb3NpdGlvbiBjYWxsZWQgYW1tb25pZmljYXRpb24uIExlYWNoaW5nIGlzIGFuIG91dHB1dC4=

Cg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2099d5863df0b1″ question_number=”253″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number represents photosynthesis?

[c]IDHCoCDCoCDCoA==[Qq][c]IDLCoCDC oCDCoA==[Qq][c]IDTCoCDCoCA=[Qq][c]IDbCoCDCoCDCoA==[Qq][c]IDc=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHRoZSB3YXRlciwgd2hpY2ggd291bGQgaGFwcGVuIHRocm91Z2ggcmVzcGlyYXRpb24uIFlvdSYjODIxNztyZSBsb29raW5nIGZvciBwaG90b3N5bnRoZXNpcywgYSBwcm9jZXNzIHRoYXQgYWJzb3JicyBjYXJib24gZGlveGlkZSBmcm9tIGFpciBvciB3YXRlciBhbmQgbW92ZXMgaW50byB0aGUgb3JnYW5pYyBjb21wb3VuZHMgaW4gcGxhbnRzLg==[Qq]

[f]IEV4Y2VsbGVudC4gTnVtYmVyIDIgc2hvd3MgY2FyYm9uIG1vdmluZyBmcm9tIHRoZSB3YXRlciB0byBwbGFudHMuIFRoaXMgdHlwZSBvZiBjYXJib24gZml4YXRpb24gaXMgZXhhY3RseSB3aGF0IGhhcHBlbnMgZHVyaW5nIHBob3Rvc3ludGhlc2lzLg==[Qq]

[f]IE5vLiBOdW1iZXIgNCBpcyBzaG93aW5nIGNvbnN1bXB0aW9uIG9mIHBsYW50cyBieSBhbiBhbmltYWwgKHRoZSBzbmFpbCkuIFlvdSYjODIxNztyZSBsb29raW5nIGZvciBwaG90b3N5bnRoZXNpcywgYSBwcm9jZXNzIHRoYXQgYWJzb3JicyBjYXJib24gZGlveGlkZSBmcm9tIGFpciBvciB3YXRlciBhbmQgbW92ZXMgaW50byB0aGUgb3JnYW5pYyBjb21wb3VuZHMgaW4gcGxhbnRzLg==[Qq]

[f]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[Qq]

[f]IE5vLiBOdW1iZXIgNyBpcyBzaG93aW5nIGNhcmJvbiBtb3ZpbmcgZnJvbSBhbmltYWxzIHRvIG1pY3Jvb3JnYW5pc21zLiBUaGlzIHdvdWxkIGhhcHBlbiB0aHJvdWdoIGRlYXRoIGFuZCByZWxlYXNlIG9mIHdhc3RlIHByb2R1Y3RzIChsaWtlIGZlY2VzKS4gWW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIHBob3Rvc3ludGhlc2lzLCBhIHByb2Nlc3MgdGhhdCBhYnNvcmJzIGNhcmJvbiBkaW94aWRlIGZyb20gYWlyIG9yIHdhdGVyIGFuZCBtb3ZlcyBpbnRvIHRoZSBvcmdhbmljIGNvbXBvdW5kcyBpbiBwbGFudHMu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20989b33f8b4b1″ question_number=”254″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number represents cellular respiration by non-photosynthetic organisms?

[c]IDLCoCDCoCDCoA==[Qq][c]IDTCoCDCoCDCoA==[Qq][c]IDbCoCDC oCDCoA==[Qq][c]IDc=

Cg==[Qq]

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gZGlveGlkZSBtb3ZpbmcgaW50byBjYXJib24gaW4gcGxhbnRzLCB3aGljaCBpcyB3aGF0IGhhcHBlbnMgdGhyb3VnaCBwaG90b3N5bnRoZXNpcy4gQ2VsbHVsYXIgcmVzcGlyYXRpb24gd291bGQgdGFrZSB0aGF0IGNhcmJvbiBhbmQgcmV0dXJuIGl0IHRvIHRoZSB0aGUgd2F0ZXIgYXMgZGlzc29sdmVkIGNhcmJvbiBkaW94aWRlLiBXaGVyZSBkbyB5b3Ugc2VlIHRoYXQgaGFwcGVuaW5nIGluIG5vbi1waG90b3N5bnRoZXRpYyBvcmdhbmlzbXM/[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIGFuaW1hbHMsIHdoaWNoIGlzIHdoYXQgaGFwcGVucyBpbiBjb25zdW1wdGlvbi4gQ2VsbHVsYXIgcmVzcGlyYXRpb24gdGFrZXMgb3JnYW5pYyBjYXJib24gYW5kIHJldHVybnMgaXQgdG8gdGhlIHRoZSB3YXRlciBhcyBkaXNzb2x2ZWQgY2FyYm9uIGRpb3hpZGUuIFdoZXJlIGRvIHlvdSBzZWUgdGhhdCBoYXBwZW5pbmcgaW4gbm9uLXBob3Rvc3ludGhldGljIG9yZ2FuaXNtcz8=[Qq]

[f]IE5pY2Ugam9iISBOdW1iZXIgNiBpcyBzaG93aW5nIHRoZSBjYXJib24gaW4gc25haWxzIHJldHVybmluZyB0byBkaXNzb2x2ZWQgY2FyYm9uIGRpb3hpZGUgaW4gdGhlIHdhdGVyLCB3aGljaCBpcyBleGFjdGx5IHdoYXQgaGFwcGVucyBhcyB0aGUgc25haWxzIHBlcmZvcm0gY2VsbHVsYXIgcmVzcGlyYXRpb24u[Qq]

[f]IE5vLiBOdW1iZXIgNyBpcyBzaG93aW5nIGNhcmJvbiBtb3ZpbmcgZnJvbSBhbmltYWxzIHRvIG1pY3Jvb3JnYW5pc21zLiBUaGlzIHdvdWxkIGhhcHBlbiB0aHJvdWdoIGRlYXRoIGFuZCByZWxlYXNlIG9mIHdhc3RlIHByb2R1Y3RzIChsaWtlIGZlY2VzKS4gQ2VsbHVsYXIgcmVzcGlyYXRpb24gdGFrZXMgb3JnYW5pYyBjYXJib24gYW5kIHJldHVybnMgaXQgdG8gdGhlIHRoZSB3YXRlciBhcyBkaXNzb2x2ZWQgY2FyYm9uIGRpb3hpZGUuIFdoZXJlIGRvIHlvdSBzZWUgdGhhdCBoYXBwZW5pbmcgaW4gbm9uLXBob3Rvc3ludGhldGljIG9yZ2FuaXNtcz8=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2097b25f53a4b1″ question_number=”255″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number represents consumption?

[c]IDLCoCDCoCDCoA==[Qq][c]IDTCoCDC oCDCoA==[Qq][c]IDbCoCDCoCDCoA==[Qq][c]IDc=[Qq]
[f]IE5vLiBOdW1iZXIgMiBzaG93cyBjYXJib24gZGlveGlkZSBtb3ZpbmcgZnJvbSB0aGUgd2F0ZXIgaW50byBwbGFudHMsIHdoaWNoIHdvdWxkIGhhcHBlbiB0aHJvdWdoIHBob3Rvc3ludGhlc2lzLiBTdHVkeSB0aGUgZGlhZ3JhbSBvZiB0aGUgY2FyYm9uIGN5Y2xlIGJlbG93LCBhbmQgc2VlIGlmIHlvdSBjYW4gY29ubmVjdCBjb25zdW1wdGlvbiBiZWxvdyB3aXRoIGNvbnN1bXB0aW9uIGluIHRoZSBkaWFncmFtIGFib3ZlLg==

Cg==

Jm5ic3A7

Cg==

[Qq]

[f]IFdheSB0byBnbyEgTnVtYmVyIDQgc2hvd3MgY29uc3VtcHRpb24u[Qq]

[f]IE5vLiBOdW1iZXIgNiBzaG93cyBtb3ZlbWVudCBvZiBjYXJib24gZnJvbSBhbmltYWxzIGJhY2sgdG8gZGlzc29sdmVkIGNhcmJvbiBkaW94aWRlIGluIHRoZSB3YXRlciwgd2hpY2ggd291bGQgaGFwcGVuIHRocm91Z2ggY2VsbHVsYXIgcmVzcGlyYXRpb24uIFN0dWR5IHRoZSBkaWFncmFtIG9mIHRoZSBjYXJib24gY3ljbGUgYmVsb3csIGFuZCBzZWUgaWYgeW91IGNhbiBjb25uZWN0IGNvbnN1bXB0aW9uIGJlbG93IHdpdGggY29uc3VtcHRpb24gaW4gdGhlIGRpYWdyYW0gYWJvdmUu

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNyBpcyBzaG93aW5nIGNhcmJvbiBtb3ZpbmcgZnJvbSBhbmltYWxzIHRvIG1pY3Jvb3JnYW5pc21zLiBUaGlzIHdvdWxkIGhhcHBlbiB0aHJvdWdoIGRlYXRoIGFuZCByZWxlYXNlIG9mIHdhc3RlIHByb2R1Y3RzIChsaWtlIGZlY2VzKS4gU3R1ZHkgdGhlIGRpYWdyYW0gb2YgdGhlIGNhcmJvbiBjeWNsZSBiZWxvdywgYW5kIHNlZSBpZiB5b3UgY2FuIGNvbm5lY3QgY29uc3VtcHRpb24gYmVsb3cgd2l0aCBjb25zdW1wdGlvbiBpbiB0aGUgZGlhZ3JhbSBhYm92ZS4=

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|209667c0bb2cb1″ question_number=”256″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number represents carbon fixation?

[c]IDHCoCDCoCDCoA==[Qq][c]IDLCoCDC oCDCoA==[Qq][c]IDTCoCDCoCDCoA==[Qq][c]IDbCoCDCoCDCoA==[Qq][c]IDc=[Qq]
[f]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

Cg==

Jm5ic3A7

Cg==

[Qq]

[f]IEV4Y2VsbGVudCEgTnVtYmVyIDIgc2hvd3MgdGhlIG1vdmVtZW50IG9mIGNhcmJvbiBmcm9tIGNhcmJvbiBkaW94aWRlIGluIHRoZSB3YXRlciBpbnRvIGNhcmJvbiBpbiBwbGFudHMuIFRoYXQmIzgyMTc7cyBjYXJib24gZml4YXRpb24sIGFuZCBpdCBoYXBwZW5zIHRob3VnaCBwaG90b3N5bnRoZXNpcy4gSnVzdCBmb3IgcmVpbmZvcmNlbWVudCwgeW91IG1pZ2h0IHdhbnQgdG8gc3R1ZHkgdGhlIGRpYWdyYW0gb2YgdGhlIGNhcmJvbiBjeWNsZSBiZWxvdy4=[Qq]

[f]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

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNiBpcyBzaG93aW5nIGNhcmJvbiBtb3ZpbmcgZnJvbSBzbmFpbHMgdG8gZGlzc29sdmVkIGNhcmJvbiBkaW94aWRlIGluIHRoZSB3YXRlciwgd2hpY2ggaXMgd2hhdCBoYXBwZW5zIGR1cmluZyBjZWxsdWxhciByZXNwaXJhdGlvbi4gQ2FyYm9uIGZpeGF0aW9uIGlzIHdoYXQgaGFwcGVucyBkdXJpbmcgcGhvdG9zeW50aGVzaXMsIGFzIGdhc2VvdXMgKG9yIGRpc3NvbHZlZCkgY2FyYm9uIGRpb3hpZGUgZ2V0cyBmaXhlZCBpbnRvIHRoZSBvcmdhbmljIGNvbXBvdW5kcyBtYWtpbmcgdXAgcGxhbnRzLlN0dWR5IHRoZSBkaWFncmFtIG9mIHRoZSBjYXJib24gY3ljbGUgYmVsb3csIGFuZCBzZWUgaWYgeW91IGNhbiBjb25uZWN0IHBob3Rvc3ludGhlc2lzIGJlbG93IHdpdGggd2hhdCBtdXN0IGJlIGNhcmJvbiBmaXhhdGlvbiBpbiB0aGUgZGlhZ3JhbSBhYm92ZS4=

Cg==

[Qq]

[f]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

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20956e9fc2e0b1″ question_number=”257″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number shows carbon moving from a lower to a higher trophic level?

[c]IDLCoCDCoCDCoA==[Qq][c]IDTCoCDC oCDCoA==[Qq][c]IDXCoCDCoCDCoA==[Qq][c]IDbCoCDCoCDCoA==[Qq][c]IDc=[Qq]
[f]IE5vLiBOdW1iZXIgMiBpcyBzaG93aW5nIGhvdyBjYXJib24gZGlveGlkZSBpbiB0aGUgd2F0ZXIgd291bGQgbW92ZSBpbnRvIHBsYW50cywgd2hpY2ggaXMgd2hhdCBoYXBwZW5zIGR1cmluZyBwaG90b3N5bnRoZXNpcy4gTW92ZW1lbnQgdG8gYSBoaWdoZXIgdHJvcGhpYyBsZXZlbCB3b3VsZCBpbnZvbHZlIHRoZSBvcmdhbmlzbXMgYXQgb25lIHRyb3BoaWMgbGV2ZWwgZWF0aW5nIHRob3NlIGF0IGEgbG93ZXIgdHJvcGhpYyBsZXZlbC4gU3R1ZHkgdGhlIGRpYWdyYW0gYmVsb3csIHNlZSBpZiB5b3UgY2FuIHNlZSB0aGF0IGhhcHBlbmluZywgYW5kIHRoZW4gY29ubmVjdCBpdCB0byB0aGUgYXJyb3dzIGluIHRoZSBkaWFncmFtIGFib3ZlLg==

Cg==

Jm5ic3A7

Cg==

[Qq]

[f]IEV4Y2VsbGVudC4gTnVtYmVyIDQgaXMgc2hvd2luZyBjYXJib24gbW92aW5nIGZyb20gcGxhbnRzIHRvIHNuYWlscy4gVGhhdCYjODIxNztzIGEgbW92ZSBmcm9tIHByb2R1Y2VycyB0byBwcmltYXJ5IGNvbnN1bWVycywgd2hpY2ggaXMgYSBtb3ZlIGZyb20gYSBsb3dlciB0byBhIGhpZ2hlciB0cm9waGljIGxldmVsLg==[Qq]

[f]IE5vLiBOdW1iZXIgNSBpcyBzaG93aW5nIGRlY29tcG9zaXRpb24uIFdoYXQgeW91JiM4MjE3O3JlIGxvb2tpbmcgZm9yIGlzIHRoZSBwcm9jZXNzIHRoYXQgbW92ZXMgbWF0dGVyIGFuZCBlbmVyZ3kgZnJvbSBhIGxvd2VyIHRyb3BoaWMgbGV2ZWwgKGxpa2UgcHJvZHVjZXJzKSB0byBhIGhpZ2hlciBvbmUgKGxpa2UgY29uc3VtZXJzKS4gU2VlIGlmIHlvdSBjYW4gZmluZCBvbmUgaW4gdGhlIGRpYWdyYW0gYmVsb3csIGFuZCB0aGVuIHRyYW5zZmVyIHdoYXQgeW91IGxlYXJuIHRvIHRoZSBxdWVzdGlvbiAodGhlIG5leHQgdGltZSB5b3Ugc2VlIGl0KS4=

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNiBpcyBzaG93aW5nIGNlbGx1bGFyIHJlc3BpcmF0aW9uIGJ5IGFuaW1hbHMgKHRoZSBzbmFpbHMpLiBXaGF0IHlvdSYjODIxNztyZSBsb29raW5nIGZvciBpcyB0aGUgcHJvY2VzcyB0aGF0IG1vdmVzIG1hdHRlciBhbmQgZW5lcmd5IGZyb20gYSBsb3dlciB0cm9waGljIGxldmVsIChsaWtlIHByb2R1Y2VycykgdG8gYSBoaWdoZXIgb25lIChsaWtlIGNvbnN1bWVycykuIEZpbmQgdGhpcyBpbiB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHRoZW4gdHJhbnNmZXIgd2hhdCB5b3UmIzgyMTc7dmUgbGVhcm5lZCB0byB0aGUgZGlhZ3JhbSBhYm92ZS4=

Cg==

[Qq]

[f]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

Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20911cadb2d4b1″ question_number=”258″] The diagram below shows the movement of carbon among components of a freshwater aquarium.

Which number shows decomposition?

[c]IDHCoCDCoCDCoA==[Qq][c]IDLCoCDCoCDCoA==[Qq][c]IDTCoCDCoCDCoA==[Qq][c]IDXCoCDC oCDCoA==[Qq][c]IDc=[Qq]
[f]IE5vLiBOdW1iZXIgMSBzaG93cyBjZWxsdWxhciByZXNwaXJhdGlvbiBieSBwbGFudHMuIEZpbmQgZGVjb21wb3NpdGlvbiBpbiB0aGUgZGlhZ3JhbSBiZWxvdywgYW5kIHRoZW4gdHJhbnNmZXIgd2hhdCB5b3UmIzgyMTc7dmUgbGVhcm5lZCB0byB0aGUgZGlhZ3JhbSBhYm92ZS4=

Cg==

Jm5ic3A7

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgMiBzaG93cyBwaG90b3N5bnRoZXNpcy4gRmluZCBkZWNvbXBvc2l0aW9uIGluIHRoZSBkaWFncmFtIGJlbG93LCBhbmQgdGhlbiB0cmFuc2ZlciB3aGF0IHlvdSYjODIxNzt2ZSBsZWFybmVkIHRvIHRoZSBkaWFncmFtIGFib3ZlLg==

Cg==

[Qq]

[f]IE5vLiBOdW1iZXIgNCBzaG93cyBjb25zdW1wdGlvbi4gRmluZCBkZWNvbXBvc2l0aW9uIGluIHRoZSBkaWFncmFtIGJlbG93LCBhbmQgdGhlbiB0cmFuc2ZlciB3aGF0IHlvdSYjODIxNzt2ZSBsZWFybmVkIHRvIHRoZSBkaWFncmFtIGFib3ZlLg==

Cg==

[Qq]

[f]IEJlYXV0aWZ1bCEgTnVtYmVyIDUgc2hvd3MgZGVjb21wb3NpdGlvbi4gSnVzdCB0byByZWluZm9yY2UgeW91ciBsZWFybmluZywgZmluZCBkZWNvbXBvc2l0aW9uIGluIHRoZSBkaWFncmFtIGJlbG93LCBhbmQgbm90ZSBob3cgaXQgcGFyYWxsZWxzIHRoZSBkaWFncmFtIGluIHRoZSBxdWVzdGlvbiB5b3UganVzdCBhbnN3ZXJlZC4=

Cg==

[Qq]

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Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|208fb61e8bacb1″ question_number=”259″] H₂O¹⁸ is water with a radioactive isotope of oxygen. In a demonstration of plant metabolism, plants are watered with H₂O¹⁸ and then placed in the light for four hours. Afterwards, the chemicals in and around the plants are analyzed for traces of radioactivity.

Which of the following would contain the radioactive oxygen atoms after four hours?

[c]IHByb3RlaW4=[Qq]

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Cg==

[Qq]

[c]IGdsdWNvc2U=[Qq]

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Cg==

[Qq]

[c]IG94eWdl biBnYXM=[Qq]

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[c]IGNhcmJvbiBkaW94aWRlIGdhcw==[Qq]

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Cg==

[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|208ba55dc890b1″ question_number=”260″] Based on the graph below (and your understanding of ecology), which is the most likely relationship between kelp (a seaweed) and urchins (herbivorous relatives of sea stars in the echinoderm phylum)?

[c]IEtlbHAgYW5kIHVyY2hpbnMgY29tcGV0ZSB3aXRoIG9uZSBhbm90aGVyIGZvciBhY2Nlc3MgdG8gdGhlaXIgcm9ja3kgdW5kZXJ3YXRlciBoYWJpdGF0Lg==[Qq]

[f]IE5vLiBLZWxwIGFyZSBwcm9kdWNlcnMgKGVjb2xvZ2ljYWxseSBlcXVpdmFsZW50IHRvIHBsYW50cykgYW5kIHVyY2hpbnMgYXJlIGhlcmJpdm9yZXMgKGVjb2xvZ2ljYWxseSBlcXVpdmFsZW50IHRvIGNvd3MsIGdvYXRzLCBldGMuKS4gS25vd2luZyB0aGF0LCB3aGF0JiM4MjE3O3MgdGhlIG1vc3QgbGlrZWx5IHJlbGF0aW9uc2hpcD8=[Qq]

[c]IFVyY2hpbnMgYXJlIHByZW RhdG9ycyBvZiBrZWxwLg==[Qq]

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[c]IFVyY2hpbnMgYW5kIGtlbHAgYXJlIG11dHVhbGlzdGljIHN5bWJpb250cy4=[Qq]

[f]IE5vLiBJZiB1cmNoaW5zIGFuZCBrZWxwIHdlcmUgbXV0dWFsaXN0cywgdGhlbiB0aGUgcmVtb3ZhbCBvZiB1cmNoaW5zIHdvdWxkIGh1cnQgdGhlIGtlbHAsIGFuZCBjYXVzZSB0aGVpciBwb3B1bGF0aW9uIHRvIGRlY3JlYXNlLg==[Qq]

[c]IFVyY2hpbnMgYXJlIGtleXN0b25lIHNwZWNpZXMgdGhhdCBoZWxwIGtlZXAga2VscCBwb3B1bGF0aW9ucyBpbiBjaGVjay4=[Qq]

[f]IE5vLiBLZXlzdG9uZSBwcmVkYXRvcnMsIGJ5IHN1cHByZXNzaW5nIHRoZSBhY3Rpdml0eSBvZiBoZXJiaXZvcmVzLCBnZW5lcmFsbHkgaW5jcmVhc2UgYmlvZGl2ZXJzaXR5LiBOb3RpY2UgdGhhdCB3aGVuIHVyY2hpbnMgYXJlIHByZXNlbnQsIHRoZXkgY29tcGxldGVseSB3aXBlIG91dCB0aGUga2VscC4gS25vd2luZyB0aGF0LCB3aGF0JiM4MjE3O3MgdGhlIG1vc3QgbGlrZWx5IHJlbGF0aW9uc2hpcD8=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|208a208a06d4b1″ question_number=”261″] Great white sharks were once thought to be territorial, spending their entire lives near where they were born. Recent tagging studies, however, have shown that great whites are migratory. Sharks from Baja California (Mexico) migrate over 2000 kilometers to the seas between Hawaii and the California coast. Other tagged California sharks have been identified in Australian waters.

Which of the following is the most likely result of these migrations?

[c]IE1pZ3JhdGlvbiB3aWxsIG1haW50YWluIHRoZSBzcGVjaWVzIGFzIGEgc2luZ2xlIGdlbmUgcG9vbCwgYnV0IG9ubHkgaWYgdGhlcmUgaXMgc2VsZWN0aW9uIGZvciBzaGFya3Mgd2l0aCBhZGFwdGF0aW9ucyB0byB0aGUgbG9jYWwgZW52aXJvbm1lbnQgdG8gd2hpY2ggdGhleSBtaWdyYXRlLg==[Qq]

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[c]IFRoZSBsb25nIG1pZ3JhdGlvbnMgd2lsbCBzdWJkaXZpZGUgdGhlIHNoYXJrJiM4MjE3O3MgZ2VuZSBwb29sLCBsZWFkaW5nIHRoZSBncmVhdCB3aGl0ZSB0byBicmVhayB1cCBpbnRvIGdlbmV0aWNhbGx5IGRpc3RpbmN0IHN1YnNwZWNpZXMu[Qq]

[f]IE5vLiBUaGUgbG9uZyBtaWdyYXRpb24gd2lsbCB0ZW5kIHRvIHByZXZlbnQgdGhlIGdlbmUgcG9vbCBvZiB0aGUgc2hhcmtzIGZyb20gc3ViZGl2aWRpbmcuIEJ1dCB3aHkgd291bGQgdGhhdCBiZT8=[Qq]

[c]IE1pZ3JhdGlvbiB3aWxsIHRlbmQgdG8ga2VlcCB0aGUgd2hpdGUgc2hhcmtzIGEgc2luZ2xlIHdvcmxkd2lkZSBzcGVjaW VzLCBidXQgb25seSBpZiB0aGUgbWlncmF0aW5nIHNoYXJrcyBtYXRlIGF0IHRoZXNlIGRpc3RhbnQgbG9jYXRpb25zLg==[Qq]

[f]IEV4YWN0bHkuIElmIHRoZSB3b3JsZC13aWRlIG1pZ3JhdGlvbiBvZiB0aGUgc2hhcmtzIGlzIGFjY29tcGFuaWVkIGJ5IGludGVyYnJlZWRpbmcgdGhyb3VnaG91dCB0aGVpciByYW5nZSwgYSBzaW5nbGUgZ2VuZSBwb29sIHdpbGwgYmUgbWFpbnRhaW5lZC4=[Qq]

[c]IExvbmcgbWlncmF0aW9ucywgYWNjb21wYW5pZWQgYnkgc2VsZWN0aW9uIGZvciBncmVhdGVyIGFiaWxpdHkgdG8gc3dpbSBsb25nIGRpc3RhbmNlcywgd2lsbCBsZWFkIHRvIGdlbmV0aWMgZnJhZ21lbnRhdGlvbiBhbmQgdGhlIHByb2JhYmxlIGZvcm1hdGlvbiBvZiBzZXZlcmFsIGRhdWdodGVyIHNwZWNpZXMgd2l0aGluIHRoZSBuZXh0IGZldyB0aG91c2FuZCB5ZWFycy4=[Qq]

[f]IE5vLiBUaGUgbG9uZyBtaWdyYXRpb24gd2lsbCB0ZW5kIHRvIGtlZXAgdGhlIGdlbmUgcG9vbCBvZiB0aGUgc2hhcmtzIGZyb20gc3ViZGl2aWRpbmcuIEJ1dCB3aHkgd291bGQgdGhhdCBiZT8=[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2085dc903e20b1″ question_number=”262″] The next question is based on the following description of three species of frogs.

* Species A, after laying eggs, provides no parental care for its eggs and larvae.
* Species B is preyed upon by a fish that prefers small larvae.
* Species C faces progressively decreasing opportunities for breeding with increasing age.

Assuming that resources available for reproduction are similar for A, B and C, which of the following reproductive strategies would be favored by each species?

[c]IFNwZWNpZXMgQSBhbmQgQiBzaG91bGQgcHJvZHVjZSBhIHNtYWxsIG51bWJlciBvZiBsYXJnZXIgb2Zmc3ByaW5nLCBhbmQgQyBzaG91bGQgYnJlZWQgZWFybGllciBpbiBsaWZlLg==[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgQSBhbmQgQywgYnV0IGlmIEIgaXMgcHJleWVkIHVwb24gYnkgZmlzaCB0aGF0IHByZWZlciBzbWFsbCBsYXJ2YWUsIHdoYXQga2luZCBvZiByZXByb2R1Y3RpdmUgc3RyYXRlZ3kgbWlnaHQgZXZvbHZlIGluIHJlc3BvbnNlPw==[Qq]

[c]IEJvdGggc3BlY2llcyBBIGFuZCBCIHNob3VsZCBwcm9kdWNlIGEgbGFyZ2UgbnVtYmVyIG9mIHNtYWxsZXIgb2Zmc3ByaW5nLiBDIHNob3VsZCBicmVlZCBsYXRlciBpbiBsaWZlIGJ1dCBpbmNyZWFzZSBpdHMgY2x1dGNoIHNpemUgKHRoZSBudW1iZXIgb2YgZWdncyBpdCBsYXlzKS4=[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgQSwgYnV0IGlmIEIgaXMgcHJleWVkIHVwb24gYnkgZmlzaCB0aGF0IHByZWZlciBzbWFsbCBsYXJ2YWUsIHdoYXQga2luZCBvZiByZXByb2R1Y3RpdmUgc3RyYXRlZ3kgbWlnaHQgZXZvbHZlIGluIHJlc3BvbnNlPyBJbiB0ZXJtcyBvZiBDLCBpZiBicmVlZGluZyBvcHBvcnR1bml0aWVzIGdvIGRvd24gd2l0aCBhZ2UsIHRoZW4gd291bGQgaXQgbWFrZSBzZW5zZSBvZiBDIHRvIGJyZWVkIGxhdGVyIGluIGxpZmU/[Qq]

[c]IEEgc2hvdWxkIHByb2R1Y2UgYSBsYXJnZSBudW1iZXIgb2Ygc21hbGxlciBvZmZzcHJpbmc7IEIgc2hvdWxkIHByb2R1Y2 UgYSBzbWFsbCBudW1iZXIgb2YgbGFyZ2VyIG9mZnNwcmluZzogQyBzaG91bGQgYnJlZWQgZWFybGllciBpbiBsaWZlLg==[Qq]

[f]IFBlcmZlY3QhIEEgc3BlY2llcyBsaWtlIEEgdGhhdCBwcm92aWRlcyBubyBwYXJlbnRhbCBjYXJlIHdpbGwgcHJvZHVjZSBtYW55IHNtYWxsIG9mZnNwcmluZzsgYSBzcGVjaWVzIGxpa2UgQiBzdWJqZWN0IHRvIGEgcHJlZGF0b3IgdGhhdCBwcmVmZXJzIHNtYWxsIG9mZnNwcmluZyB3aWxsIHByb2JhYmx5IGV2b2x2ZSBsYXJnZXIgbGFydmFlOyBhIHNwZWNpZXMgbGlrZSBDIHRoYXQgY2FuJiM4MjE3O3QgYnJlZWQgbGF0ZXIgaW4gbGlmZSB3aWxsIGJyZWVkIGVhcmxpZXIgaW4gbGlmZS4=[Qq]

[c]IFNwZWNpZXMgQSBzaG91bGQgcHJvZHVjZSBhIHNtYWxsIG51bWJlciBvZiBsYXJnZXIgb2Zmc3ByaW5nOyBCIHNob3VsZCBwcm9kdWNlIGEgbGFyZ2UgbnVtYmVyIG9mIHNtYWxsZXIgb2Zmc3ByaW5nIGFuZCBDIHNob3VsZCBicmVlZCBlYXJsaWVyIGluIGxpZmUgd2l0aCBhIHNtYWxsIGNsdXRjaCBzaXplLg==[Qq]

[f]IE5vLiBZb3UmIzgyMTc7cmUgcmlnaHQgYWJvdXQgQywgYnV0IHdyb25nIGFib3V0IEEgYW5kIEIuIEEgc3BlY2llcyBsaWtlIEEgdGhhdCBpbnZlc3RzIGxpdHRsZSBlbmVyZ3kgaW4gY2FyaW5nIGZvciBpdHMgeW91bmcgd291bGRuJiM4MjE3O3QgaW52ZXN0IGluIHRoZW0gYnkgcHJvZHVjaW5nIGxhcmdlIG9mZnNwcmluZy4gQSBzcGVjaWVzIGxpa2UgQiBzdWJqZWN0IHRvIGEgcHJlZGF0b3IgdGhhdCBwcmVmZXJzIHNtYWxsIG9mZnNwcmluZyB3aWxsIHByb2JhYmx5IGV2b2x2ZSBsYXJnZXIgbGFydmFlLg==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|208449c4350cb1″ question_number=”263″] A classic study of species interaction involves two species of barnacles.

Species 1, Chathalamus, occupies the higher strata of intertidal rocks, and and species 2 (Semibalanus) occupies the lower strata. When species 2 is experimentally removed from the lower strata, species 1 expands its range, and occupies both the upper and lower strata.

From the choices given below, what would be your inference from these observations?

[c]IFNwZWNpZXMgMSBhbmQgc3BlY2llcyAyIGV4aGliaXQgbXV0dWFsaXNtLg==[Qq]

[f]IE5vLiBBIG11dHVhbGlzdGljIHJlbGF0aW9uc2hpcCBpcyBvbmUgd2hlcmUgYm90aCBzcGVjaWVzIGJlbmVmaXQuIElmIHRoYXQgd2VyZSB0aGUgY2FzZSwgdGhlbiBpZiBzcGVjaWVzIDIgd2VyZSByZW1vdmVkLCB5b3UmIzgyMTc7ZCBleHBlY3Qgc3BlY2llcyAxIHRvIGJlIGhhcm1lZC4gQnV0IGhlcmUgeW91IHNlZSBzcGVjaWVzIDEgZXhwYW5kaW5nIGl0cyByYW5nZS4=[Qq]

[c]IFRoZSB1cHBlciBzdHJhdGEgb2YgdGhlIGludGVydGlkYWwgcm9j ayBpcyB0aGUgcmVhbGl6ZWQgbmljaGUgb2Ygc3BlY2llcyAxLg==[Qq]

[f]IFllcy4gVGhpcyBxdWVzdGlvbiBpcyBhYm91dCB0aGUgZGlmZmVyZW5jZSBiZXR3ZWVuIHJlYWxpemVkIG5pY2hlIGFuZCBmdW5kYW1lbnRhbCBuaWNoZSwgYW5kIGl0JiM4MjE3O3MgY2xlYXIgdGhhdCB0aGUgcmVhbGl6ZWQgbmljaGUgb2Ygc3BlY2llcyAxIGlzIHRoZSB6b25lIGp1c3QgYmVsb3cgdGhlIGhpZ2ggdGlkZSBsaW5lLiBJdHMgZnVuZGFtZW50YWwgbmljaGUgaXMgbXVjaCB3aWRlciwgYnV0IGl0JiM4MjE3O3MgcmVzdHJpY3RlZCB0byBpdHMgcmVhbGl6ZWQgbmljaGUgYnkgY29tcGV0aXRpdmUgcHJlc3N1cmUgZnJvbSBzcGVjaWVzIDIsIA==U2VtaWJhbGFudXM=Lg==[Qq]

[c]IFRoZSB1cHBlciBzdHJhdGEgb2YgdGhlIGludGVydGlkYWwgcm9jayBpcyB0aGUgZnVuZGFtZW50YWwgbmljaGUgb2Ygc3BlY2llcyAxLg==[Qq]

[f]IE5vLiBUaGUgZnVuZGFtZW50YWwgbmljaGUgb2YgYSBzcGVjaWVzIGlzIHRoZSBtYXhpbXVtIHNldCBvZiByZXNvdXJjZXMgdGhhdCBpdCBjb3VsZCBleHBsb2l0IGluIHRoZSBhYnNlbmNlIG9mIGNvbXBldGl0aW9uLiBUaGUgcmVhbGl6ZWQgbmljaGUgaXMgdGhlIHNldCBvZiByZXNvdXJjZXMgdGhhdCBpdCYjODIxNztzIGxpbWl0ZWQgdG8gYmVjYXVzZSBvZiBjb21wZXRpdGlvbi4gTG9vayBhZ2FpbiBhdCB0aGUgZGlhZ3JhbSBhbmQgc2VlIGlmIHlvdSBjYW4gZmlndXJlIG91dCB3aGljaCBpcyB3aGljaCBmb3Igc3BlY2llcyAxLg==[Qq]

[c]IFNwZWNpZXMgMSBjYW4gb3V0Y29tcGV0ZSBzcGVjaWVzIDIu[Qq]

[f]IE5vdCByZWFsbHkuIEZpcnN0IG9mIGFsbCwgY29tcGV0aXRpdmUgc3VwZXJpb3JpdHkgaXMgY29udGV4dHVhbDogc3BlY2llcyAxIGNhbiBvdXRjb21wZXRlIDEgaW4gdGhlIHVwcGVyIHRpZGFsIHpvbmUuIEhvd2V2ZXIsIHNwZWNpZXMgMSBpcyBvdXRjb21wZXRlZCBieSBzcGVjaWVzIDIgaW4gdGhlIGxvd2VyIHRpZGUgem9uZS4=

Cg==

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[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|207fbff107a0b1″ question_number=”264″] A non-poisonous butterfly species (Species D) has the same color pattern as a highly poisonous species (Species E). The population of non-poisonous Species D is higher than that of poisonous Species E.

Given this scenario, what will be the effect of Species D’s mimicry on the fitness of Species E?

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|207e5265bcccb1″ question_number=”265″] The graph below shows the results of a study by plant ecologist W.G. Smith. In this study, members of two species of the Desmodium genus (a member of the pea family) were planted close to one another (intraspecific competition) or close to members of the other species (interspecific competition).

The results suggest that

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|207a13140be0b1″ question_number=”266″] Which of the following statements best describes energy in an ecosystem?

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Cg==

[Qq]

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[f]IE5vLiBUYWtlIGEgbG9vayBhdCB0aGVzZSBweXJhbWlkcyBvZiBiaW9tYXNzIGluIGEgdGVycmVzdHJpYWwgZWNvc3lzdGVtLiBDYW4geW91IHNheSB0aGF0IGluIGEgcHlyYW1pZCBvZiBiaW9tYXNzIGVhY2ggdHJvcGhpYyBsZXZlbCBoYXMgOTAlIG9mIHRoZSBtYXNzIG9mIHRoZSBvbmUgYmVsb3cgaXQ/

Cg==

[Qq]

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[f]IFRoYXQmIzgyMTc7cyBleGFjdGx5IHJpZ2h0LiBXaXRoIHRoZSBleGNlcHRpb24gb2Ygc29tZSBkZWVwIHNlYSBlY29zeXN0ZW1zIHRoYXQgYXJlIHBvd2VyZWQgYnkgZ2VvdGhlcm1hbCBlbmVyZ3ksIHRoZSBlbmVyZ3kgaW4gbW9zdCBsaXZpbmcgc3lzdGVtIG9yaWdpbmF0ZXMgd2l0aCB0aGUgc3VuLCBhbmQgZ2V0cyBpbmNvcnBvcmF0ZWQgaW50byBlY29zeXN0ZW1zIHRocm91Z2ggdGhlIHBob3Rvc3ludGhldGljIGFjdGlvbiBvZiBwcm9kdWNlcnMu[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2078829c0eb0b1″ question_number=”267″] Amoebas are unicellular protists that are found in aquatic environments. One of these environments (X) is the amoeba’s natural environment. Environments Y and Z have been experimentally manipulated.

Based on the information above, environment Y must be ________ to the amoeba’s natural environment.

[c]IGh5cG90b25pYw==[Qq]

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[c]IGlzb3Rvbmlj[Qq]

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[c]IGh5cGVy dG9uaWM=[Qq]

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[c]IG1lc290b25pYw==[Qq]

[f]IE5vLiAmIzgyMjA7TWVzb3RvbmljJiM4MjIxOyBpcyBhIGJvdGFueSB3b3JkOiBpdCBtZWFucyAmIzgyMjA7QSB0eXBlIG9mIGJyYW5jaGluZyBvciBncm93dGggd2hlcmUgdGhlIHNob290cyBuZWFyZXN0IHRoZSBtaWRkbGUgb2YgdGhlIHN0ZW0gb3IgYnJhbmNoIHNob3cgdGhlIGdyZWF0ZXN0IGRldmVsb3BtZW50LiYjODIyMTsgTmV4dCB0aW1lLCBjaG9vc2UgYW4gYW5zd2VyIHJlbGF0ZWQgdG8gb3Ntb3Npcy4=[Qq]

[q json=”true” xx=”3″ multiple_choice=”true” dataset_id=”dk MC dataset2|20731dec838cb1″ question_number=”268″] Amoebas are unicellular protists that live in aquatic environments. A photomicrograph of one is shown immediately below.

The images that follow are simplified representations of amoebas, showing only the membrane and the nucleus. The letters X, Y, and Z represent the amoeba’s environment. Environment X is the amoeba’s natural environment, while environments Y and Z have been experimentally manipulated.

The most likely explanation for what’s happening to the amoeba in environment Z is that

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[c]IGFjdGl2ZSB0cmFuc3BvcnQgcHVtcHMgYXJlIG1vdmluZyB3YXRlciBmcm9tIHRoZSBoeXBlcnRvbmljIGNlbGwgZXh0ZXJpb3IgaW50byB0aGUgaHlwb3RvbmljIGNlbGwgaW50ZXJpb3Iu[Qq]

[f]IE5vLiBUaGUgcHVtcHMgaW52b2x2ZWQgaW4gYWN0aXZlIHRyYW5zcG9ydCBwdW1wIHNvbHV0ZXMsIG5vdCB3YXRlci4gVGhpcyBxdWVzdGlvbiBpcyBhYm91dCBvc21vc2lzLCBhbmQgdGhlIGtleSB0aGluZyB0byByZW1lbWJlciBpcyB0aGF0IHdhdGVyIGFsd2F5cyBmbG93cyBmcm9tIGh5cG90b25pYyB0byBoeXBlcnRvbmljLiBXaXRoIHRoYXQgaW4gbWluZCwgYXNrIHlvdXJzZWxmLCB3aGF0IGNvdWxkIGhhdmUgY2F1c2VkIHRoZSBjZWxsIGF0IFogdG8gZXhwYW5kPw==[Qq]

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20722973a308b1″ question_number=”269″] A part found in plant cells but not in animal cells that allows plant cells to thrive in hypotonic environments is/are

[c]IGFxdWFwb3JpbnM=[Qq]

[f]IE5vLiBBcXVhcG9yaW5zIGFyZSBtZW1icmFuZSBjaGFubmVscyB0aGF0IGZhY2lsaXRhdGUgdGhlIGZsb3cgb2Ygd2F0ZXIgYWNyb3NzIHRoZSBtZW1icmFuZS4gVGhlIGNoYWxsZW5nZSBvZiBhIGNlbGwgaW4gYSBoeXBvdG9uaWMgZW52aXJvbm1lbnQgaXMgdG8gYXZvaWQgYnVyc3RpbmcgYXMgd2F0ZXIgZmxvd3MgZnJvbSB0aGUgaHlwb3RvbmljIGVudmlyb25tZW50IGludG8gdGhlIGh5cGVydG9uaWMgY2VsbCwgYXMgc2hvd24gaW4gdGhlIHJlZCBibG9vZCBjZWxscyBvbiB0aGUgcmlnaHQgc2lkZSBvZiB0aGUgZGlhZ3JhbSBiZWxvdy4=

Cg==

[Qq]What plant cell structure could prevent a cell from bursting due to osmotic pressure?

[c]IGNobG9yb3BsYXN0cw==[Qq]

[f]IE5vLiBUaGUgZnVuY3Rpb24gb2YgdGhlIGNobG9yb3BsYXN0IGlzIHBob3Rvc3ludGhlc2lzLg==

Cg==

SGVyZSYjODIxNzsgaG93IHRvIHRoaW5rIGFib3V0IHRoaXMgcXVlc3Rpb24uIFRoZSBjaGFsbGVuZ2Ugb2YgYSBjZWxsIGluIGEgaHlwb3RvbmljIGVudmlyb25tZW50IGlzIHRvIGF2b2lkIGJ1cnN0aW5nIGFzIHdhdGVyIGZsb3dzIGZyb20gdGhlIGh5cG90b25pYyBlbnZpcm9ubWVudCBpbnRvIHRoZSBoeXBlcnRvbmljIGNlbGwsIGFzIHNob3duIGluIHRoZSByZWQgYmxvb2QgY2VsbHMgb24gdGhlIHJpZ2h0IHNpZGUgb2YgdGhlIGRpYWdyYW0gYmVsb3cu

Cg==

[Qq]

What plant cell structure could prevent a cell from bursting due to osmotic pressure?

[c]IGdvbGdpIGJvZGllcw==[Qq]

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Cg==

[Qq]

What plant cell structure could prevent a cell from bursting due to osmotic pressure?

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Cg==

[Qq]

What plant cell structure could prevent a cell from bursting due to osmotic pressure?

[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|207134fac284b1″ question_number=”270″] Gorillas live in troops that usually consist of one dominant male (called a silverback), multiple females, and their offspring. The silverback allows younger males to court pregnant females and immature females. However, the silverback wards off attempts by other males to mate with any females who might become pregnant. Additionally, when a silverback takes over a new troop, he kills all the baby gorillas.

From an evolutionary perspective, the best explanation for the silverback’s behavior is that he is

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|20703bd9ca38b1″ question_number=”271″] For an evolutionary biologist studying birds, which of the following would be the best way to gauge an individual’s “fitness?”

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|206ee7eb0230b1″ question_number=”272″] Which of the curves below corresponds to a species with high survival in early and middle life, followed by a rapid decline in later life?

[c]IFR5cG UgSSA=[Qq][c]IFR5cGUgSUkg[Qq][c]IFR5cGUgSUlJ

Cg==[Qq]

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[q json=”true” multiple_choice=”true” dataset_id=”dk MC dataset2|2069982fe210b1″ question_number=”273″] Which of the curves below corresponds to a species with high mortality early in life, followed by very few individuals surviving to the maximum lifespan?

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Cg==[Qq]

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