Read the following four statements A, B, C and D and select the right option having both correct statements:

STATEMENTS:

(A) Z-scheme of light reaction takes place in the presence of PSI only
(B) Only PSI functional in cyclic photophosphorylation
(C) Cyclic photophosphorylation results in a synthesis of ATP and NADPH2
(D) Stroma lamellae lack PSII as well as NADP

Options:

1. A and B
2. B and C
3. C and D
4. B and D

Subtopic:  Light Reaction: Photophosphorylation | Light Reactions |
 83%
Level 1: 80%+
AIPMT - 2010
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Assertion(A): RuBisCO has affinity for both the gases: CO2 and O2.
Reason(R): RuBisCO is the most abundant enzyme in the biosphere.

Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.


Subtopic:  Light Reaction: Photophosphorylation |
 81%
Level 1: 80%+
Hints