Question

The chemiosmotic process in chloroplasts involves the ________?

1) establishment of a proton gradient across the thylakoid membrane
2) diffusion of electrons through the thylakoid membrane
3) reduction of water to produce atp
4) movement of water by osmosis into the thylakoid space from the stroma
5) formation of glucose, using carbon dioxide, nadph, and atp

Answer 1

The chemiosmotic process in chloroplasts involves the establishment of a proton gradient across the thylakoid membrane during the light reactions of photosynthesis.

Step-by-step explanation:

The chemiosmotic process in chloroplasts involves the establishment of a proton gradient across the thylakoid membrane. This occurs during the light reactions of photosynthesis. As sunlight energizes electrons in photosystem II, they are passed along an electron transport chain, which pumps hydrogen ions into the thylakoid lumen, creating a high concentration of hydrogen ions. The flow of these hydrogen ions through ATP synthase during chemiosmosis results in the synthesis of ATP.