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The mechanism of ATP formation in both chloroplasts and mitochondria is explained by the
Your answer:
Correct answer: (d)
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Explanation
Why (d) is correct
The chemiosmotic theory (Mitchell) explains ATP formation in both chloroplasts and mitochondria: a proton gradient across a membrane drives ATP synthase.
Why the other options are wrong
- (a) · your answer The Cholodny-Went model explains tropic movements due to auxin.
- (b) · your answer Godlewski's relay pump theory was about the ascent of sap.
- (c) · your answer Munch's mass flow hypothesis explains the movement of food in the phloem.
NCERT point: Chemiosmosis needs a membrane, a proton pump, a proton gradient and ATP synthase.
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