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Consider the following statements about the light reaction.
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Consider the following statements about the light reaction.
(A) PS II is located physically on the inner side of the thylakoid membrane.
(B) Water splitting releases protons into the lumen.
(C) NADP reductase is on the lumen side.
(D) The protons for NADP+ reduction come from the stroma.
How many of these statements are correct?
Your answer:
Correct answer: (c)
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Explanation
Why (c) is correct
A is true (NCERT: PS II is physically located on the inner side of the thylakoid membrane), B is true and D is true. C is false: NADP reductase is on the stroma side. So three statements are correct.
Why the other options are wrong
- (a) · your answer Three statements are correct.
- (b) · your answer Three statements are correct.
- (d) · your answer C is false.
NCERT point: The location of these parts explains the proton gradient.
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