alleryDuring photosynthesis, ATP is produced primarily by:
APhotophosphorylation — H+ gradient drives ATP synthase
BGlycolysis
CNo ATP made
DSubstrate-level
Answer & Solution
Correct answer: A. Photophosphorylation — H+ gradient drives ATP synthase
**Photophosphorylation:** chemiosmotic ATP synthesis in chloroplasts using photon-driven H+ gradient.
Analogous to oxidative phosphorylation but light-driven.
Cyclic or non-cyclic depending on electron flow.
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