AP (Advanced Placement) Biology: Questions 5 - 7 of 868

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Question number: 5

» Enyzmes and Metabolism

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MCQ▾

Question

Which of the following is not a product of the Krebs cycle?

Choices

Choice (5)Response

a.

CO2

b.

ATP

c.

NADH

d.

FADH2

e.

Acetyl CoA

Question number: 6

» Enyzmes and Metabolism

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MCQ▾

Question

If a small molecule is acts as a substrate for a specific enzyme which was modified by being coupled to a larger molecule before the reaction could occur, what would be the most likely result?

Choices

Choice (5)Response

a.

The rate of the reaction would increase because of the additional mass of the reactant.

b.

The enzyme would be permanently disabled by the larger portion of the substrate molecule.

c.

The enzyme would not be able to interact with the modified substrate.

d.

The rate of the reaction would increase because the additional molecular structure would act as a cofactor.

e.

The reaction catalyzed by the enzyme would progress in the normal fashion because the part of the molecule that interacts with the enzyme would remain substantially unchanged.

Question number: 7

» DNA and Protein Synthesis

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MCQ▾

Question

Which of the following codon pairs would most likely code for the same amino acid because of the wobble in the genetic code?

Choices

Choice (5)Response

a.

CAU and UAC

b.

UUU and UUA

c.

AAC and ACC

d.

GGG and CCC

e.

UUA and CUA

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