Organization and Regulation [Subject SAT (College Board) Biology]: Questions 22 - 27 of 34

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Question 22

Organization and Regulation
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Question

MCQ▾

Which one of the following conditions is least likely to denature an enzyme?

Choices

Choice (5)Response

a.

High temperature

b.

A low temperature

c.

Heavy metal ions

d.

Extreme pH

e.

None of the above

Question 23

Organization and Regulation
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Question

MCQ▾

Which of the following enzyme most abundantly found on earth?

Choices

Choice (5)Response

a.

Nitrogenase

b.

Invertase

c.

RuBisCO

d.

Catalase

e.

None of the above

Question 24

Organization and Regulation
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Question

MCQ▾

The first step in the process of photosynthesis is

Choices

Choice (5)Response

a.

Excitation of electrons of chlorophyll by a photon of light

b.

Formation of ATP

c.

Ionization of water

d.

Attachment of CO2 to a 5 carbon sugar

e.

All of the above

Question 25

Organization and Regulation
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Question

MCQ▾

NADPH is generated through

Choices

Choice (5)Response

a.

PS-II

b.

PS-I

c.

Anaerobic respiration

d.

Glycolysis

e.

None of the above

Question 26

Organization and Regulation
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Question

MCQ▾

The carbon dioxide acceptor in Calvin cycle/C3 plant is

Choices

Choice (5)Response

a.

Ribulose 1 - 5, diphosphate (RuDP)

b.

Ribulose monophosphate (RMP)

c.

Phosphoglyceric acid (PGA)

d.

Phosphoenol pyruvate (PEP)

e.

All of the above

Question 27

Organization and Regulation
Edit

Question

MCQ▾

The first acceptor of electrons from an excited chlorophyll molecule of PS-II is

Choices

Choice (5)Response

a.

Fe-S protein

b.

Quinone

c.

Cytochrome

d.

Ferredoxin

e.

Question does not provide sufficient data or is vague