Biochemistry

Question: In algae, photosynthesis takes place in
[A].

choloroplasts

[B].

cell membrane

[C].

mitochondria

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Carbon fixation requires the expenditure of ATP molecules which is generated by
[A].

formation of glucose during the Calvin cycle

[B].

replenishment of chlorophyll

[C].

ETS (electron transfer system) during the light reactions

[D].

none of the above

Answer: Option C

Explanation:

No answer description available for this question.

Question: Carbon dioxide is reduced in
[A].

noncyclic photophosphorylation

[B].

the Calvin cycle

[C].

the light reactions

[D].

both light and dark reactions

Answer: Option B

Explanation:

No answer description available for this question.

Question: In oxygenic photosynthesis, water is split in order to provide the
[A].

electrons needed to reduce P680

[B].

O2 needed for the dark reactions

[C].

electrons needed to reduce NADH

[D].

electrons needed for cyclic photophosphorylation

Answer: Option A

Explanation:

No answer description available for this question.

Question: In noncyclic photophosphorylation, the ultimate acceptor of electrons that have been produced from the splitting of water is
[A].

NADP+

[B].

chlorophyll a

[C].

carbon dioxide

[D].

chlorophyll b

Answer: Option C

Explanation:

No answer description available for this question.

Question: If the oxygen is labeled in CO2 and provide this CO2 to a plant, where it is expected to find this labeled oxygen after the plant had undergone photosynthesis?
[A].

In the water used

[B].

In the NADPH

[C].

In the carbohydrate produced

[D].

In the oxygen given off by the plant

Answer: Option C

Explanation:

No answer description available for this question.

Question: NADP+ is reduced to NADPH during
[A].

light dependent reactions

[B].

photorespiration

[C].

calvin cylcle

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Electron transport systems play a vital role in
[A].

Calvin cycle

[B].

photorespiration

[C].

light-dependent reactions

[D].

all of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In the Calvin cycle, carbon dioxide is fixed in a reaction with the
[A].

ribulose diphosphate

[B].

ribulose phosphate

[C].

ribose tri phosphate

[D].

3-phosphoglyceric acid

Answer: Option A

Explanation:

No answer description available for this question.

Question: In oxygenic photosynthesis, the electron donor is
[A].

water

[B].

oxygen

[C].

NADH

[D].

NADPH

Answer: Option A

Explanation:

No answer description available for this question.