AP (Advanced Placement) Biology: Questions 5 - 8 of 327

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Question number: 5

» Enyzmes and Metabolism

MCQ▾

Question

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

Choices

Choice (5) Response

a.

CO2

b.

Acetyl CoA

c.

FADH2

d.

ATP

e.

NADH

Question number: 6

» Enyzmes and Metabolism

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 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.

c.

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

d.

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

e.

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

Question number: 7

» DNA and Protein Synthesis

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.

GGG and CCC

b.

UUU and UUA

c.

UUA and CUA

d.

CAU and UAC

e.

AAC and ACC

Question number: 8

» DNA and Protein Synthesis

MCQ▾

Question

Carcinogens may be occurs due to

Choices

Choice (5) Response

a.

Man made

b.

Naturally

c.

Ionic radiation

d.

Tar of tobacco smoke

e.

All of the above

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