Biochemistry

Question: Assume the combined processes of photosynthesis and cellular respiration, the electrons that start as part of H2O at the beginning of the light reactions end up attaching to
[A].

O2 to make new H2O

[B].

NADPH to make new glucose

[C].

pyruvate to make ethanol

[D].

electron transport carriers to make O2

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following serves as a reactant in photosynthesis and a product in cellular respiration?
[A].

O2

[B].

CO2

[C].

Sunlight

[D].

ATP

Answer: Option B

Explanation:

No answer description available for this question.

Question: More ATP is manufactured during __________ than at any other time in all of cellular metabolism.
[A].

fermentation

[B].

glycolysis

[C].

the light reactions of photosynthesis

[D].

oxidative phosphorylation

Answer: Option D

Explanation:

No answer description available for this question.

Question: Glycolysis takes places in the __________ and produces __________ , which in the presence of oxygen then enters the __________ .
[A].

cytosol; glucose; mitochondrion to complete fermentation

[B].

cytosol; pyruvate; mitochondrion to complete fermentation

[C].

cytosol; pyruvate; mitochondrion to complete cellular respiration

[D].

mitochondrion; pyruvate; chloroplast to complete photosynthesis

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following represents a correct ordering of the events that occur during the respiration of glucose in the absence of O2?
[A].

Glycolysis; citric acid cycle; oxidative phosphorylation

[B].

Glycolysis; oxidative phosphorylation; citric acid cycle

[C].

Oxidative phosphorylation; citric acid cycle; glycolysis

[D].

Glycolysis; fermentation

Answer: Option D

Explanation:

No answer description available for this question.

Question: Antenna complexes, electron transport chains, and carbon fixation are all found in
[A].

animal cells

[B].

bacterial cells

[C].

plant cells

[D].

association with the reactions of the citric acid cycle

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following structures or processes are logically associated with chloroplasts?
[A].

Plant cells

[B].

Chlorophyll

[C].

Thylakoid membranes

[D].

All of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following statements about energy metabolism is false?
[A].

The energy that powers living systems ultimately comes from the sun

[B].

All animals in some way rely on plants for their energy

[C].

Plants provide the water and CO2 that animals need to carry out respiration

[D].

All eukaryotic organisms carry out respiration in the presence of O2

Answer: Option C

Explanation:

No answer description available for this question.

Question: Hydrogen (electron) acceptor in the light reactions is
[A].

ADP

[B].

NADP+

[C].

NAD+

[D].

FADH

Answer: Option B

Explanation:

No answer description available for this question.

Question: During the light-dependent reactions of photosynthesis, which of the following does not occur?
[A].

Splitting of water

[B].

Carbon dioxide fixation

[C].

Release of oxygen

[D].

Absorption of light energy by photosystems

Answer: Option B

Explanation:

No answer description available for this question.