Atoms and Compounds [Subject SAT (College Board) Biology]: Questions 75 - 78 of 96

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Question 75

Atoms and Compounds
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Question

MCQ▾

PGA is the first carbon dioxide fixation product was discovered during the photosynthesis in

Choices

Choice (5)Response

a.

Angiosperm

b.

Algae

c.

Gymnosperm

d.

Bryophyte

e.

None of the above

Question 76

Atoms and Compounds
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Question

MCQ▾

How much energy is released when one of the high-energy bonds in ATP is broken?

Choices

Choice (5)Response

a.

7.3 cal/mole

b.

7.3 kcal/mole

c.

730 cal/mole

d.

730 kcal/mole

e.

All of the above

Question 77

Atoms and Compounds
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Question

MCQ▾

Which of the following is a reduced compound?

Choices

Choice (5)Response

a.

N2

b.

NADH

c.

O2

d.

CO2

e.

Question does not provide sufficient data or is vague

Question 78

Atoms and Compounds
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Question

MCQ▾

The diagram below represents reactions taking place in a bacterium in which amino acids are produced from other amino acids by the action of specific enzymes.

The numbers 1 - 3 refer to different amino acids and the letters V and X refer to different enzymes.

When an excess of amino acid 3 is added into the bacterium the rate of the reactions is reduced. What is the cause of this?

V and X refer to different enzymes

V and X Refer to Different Enzymes

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Choices

Choice (5)Response

a.

Excess substrate inhibiting the enzyme

b.

Positive feedback

c.

End product inhibition

d.

Enzyme denaturation

e.

Question does not provide sufficient data or is vague