AP (Advanced Placement) Biology: Questions 17 - 21 of 868

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Question number: 17

» Enyzmes and Metabolism

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MCQ▾

Question

5-carbon molecule involved in the TCA cycle is:

Choices

Choice (5)Response

a.

Oxaloacetate

b.

Acetyl CoA

c.

α-ketoglutarate

d.

Succinyl CoA

e.

Pyruvate

Question number: 18

» Enyzmes and Metabolism

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MCQ▾

Question

If 12.5 g of fats were fully oxidized, what would be the net energy released for used by a body?

Choices

Choice (5)Response

a.

112.5 kilocalories

b.

50 kilocalories

c.

12.5 kilocalories

d.

100 kilocalories

e.

125 kilocalories

Question number: 19

» Enyzmes and Metabolism

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MCQ▾

Question

Energy is important to all forms of life because

Choices

Choice (5)Response

a.

It is required to do work

b.

It is required to make specific alterations in the cell

c.

All forms of life require a continuous supply of it

d.

All a. , b. and c. are correct

e.

None of the above

Question number: 20

» DNA and Protein Synthesis

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MCQ▾

Question

The clustering or stringing of ribosomes are called:

Choices

Choice (5)Response

a.

Ergosomes

b.

Cycloheximide

c.

Polyribosomes

d.

Both a. and c. are correct

e.

All of the above

Question number: 21

» Enyzmes and Metabolism

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MCQ▾

Question

A competitive inhibitor

Choices

Choice (5)Response

a.

Does not inhibit enzyme activity but lowers substrate concentration

b.

Binds at a site other than the active site

c.

Cannot be processed by the enzyme

d.

Binds to and inactivates the substrate

e.

Irreversibly binds and inactivates the enzyme

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