Atoms and Compounds [Subject SAT (College Board) Biology]: Questions 71 - 74 of 96

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Question number: 71

» Atoms and Compounds

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MCQ▾

Question

Which one of the following graphs shows the effect of pH on the reaction velocity of a typical enzyme? Note: In each graph, the scale on the x axis is from pH 2 to pH 13.

The reaction velocity

The Reaction Velocity

Choices

Choice (5)Response

a.

D

b.

A

c.

B

d.

C

e.

All of the above

Question number: 72

» Atoms and Compounds

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MCQ▾

Question

Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?

Choices

Choice (5)Response

a.

Violet and blue

b.

Blue and green

c.

Green and red

d.

Red and violet

e.

All of the above

Question number: 73

» Atoms and Compounds

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MCQ▾

Question

Which of the following statements is incorrect with respect to an enzyme’s ability to catalyze a reaction?

Choices

Choice (5)Response

a.

An enzyme allows the reaction to go through a more stable transition state than would normally be the case

b.

An enzyme binds reactants such that they are positioned correctly and can attain their transition-state configurations

c.

An enzyme provides a reaction surface and a hydrophilic environment for the reaction to take place

d.

An enzyme can weaken bonds in reactants through the binding process

e.

None of the above

Question number: 74

» Atoms and Compounds

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MCQ▾

Question

Apparatus to measure the rate of respiration and RQ is

Choices

Choice (5)Response

a.

Potometer

b.

Respirometer

c.

Auxanometer

d.

Manometer

e.

All of the above

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