Question

which process in the light reactions uses a proton gradient to create atp? photorespiration photophosphorylation glycolysis photolysis

Explanation:

Photophosphorylation in light - reactions uses a proton gradient across the thylakoid membrane to drive ATP synthesis via ATP synthase. Photorespiration is a wasteful process, glycolysis occurs in cellular respiration not light - reactions, and photolysis is the splitting of water molecules in light - reactions, not related to ATP synthesis via proton gradient.

Answer:

Photophosphorylation