What happens to protons (H⁺) during ATP synthesis in photosynthesis?

Practice question

Question

What happens to protons (H⁺) during ATP synthesis in photosynthesis?

Options

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They are pumped into the stroma They move from the stroma to the lumen They pass through ATP synthase into the stroma Correct They are used to reduce NADP⁺

Explanation

Protons move through ATP synthase from the lumen to the stroma, generating ATP through chemiosmosis.

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