Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
Correct answer: D. Proton gradient
- A. Membrane potential
- B. Accumulation of Na ions
- C. Accumulation of K ions
- D. Proton gradient
Explanation
The chemiosmotic theory, proposed by Peter Mitchell, suggests that a proton gradient across the membrane is used to generate ATP. This gradient is created by the accumulation of hydrogen ions (protons) on one side of the membrane, driving ATP synthesis as protons flow back across the membrane through ATP synthase.
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