Atoms and Compounds [Subject SAT (College Board) Biology]: Questions 84 - 88 of 96

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Question number: 84

Atoms and Compounds
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Question

MCQ▾

Respiratory Quotient (RQ) is

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question number: 85

Atoms and Compounds
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Question

MCQ▾

The oxygen evolved during photosynthesis comes from water molecule. Which one of the following pair of elements gets involved in the reaction?

Choices

Choice (5)Response

a.

Magnesium and chlorine

b.

Manganese and chlorine

c.

Manganese and potassium

d.

Magnesium and molybdenum

e.

None of the above

Question number: 86

Atoms and Compounds
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Question

MCQ▾

Enzymes are

Choices

Choice (5)Response

a.

Make endergonic reactions proceed spontaneously

b.

Lower the activation energy of a reaction

c.

Are not very specific in their choice of substrates

d.

Are needed in large quantities because they are used up during catalysis

e.

Question does not provide sufficient data or is vague

Question number: 87

Atoms and Compounds
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Question

MCQ▾

Anoxygenic photosynthesis is a characteristic of

Choices

Choice (5)Response

a.

Ulva

b.

Rhodospirillum

c.

Chlamydomonas

d.

Spirogyra

e.

All of the above

Question number: 88

Atoms and Compounds
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Question

MCQ▾

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

Choices

Choice (5)Response

a.

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

b.

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

c.

Enzyme can weaken bonds in reactants through the binding process.

d.

An enzyme allows the reaction to endure a less stable transition state than would normally be the case.

e.

Question does not provide sufficient data or is vague