As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. What happens to this energy? A) It is lost as heat. B) It excites electrons of the reaction center of photosystem I. C) It is used to establish and maintain a proton gradient. D) It is used to phosphorylate NAD⁺to NADPH, the molecule that accepts electrons from photosystem I.

Question

Quizplus · Accepted Answer

The energy lost by electrons as they pass through the electron carriers of photosystem II is used to establish and maintain a proton gradient. This proton gradient is ultimately used to produce ATP through the process of chemiosmosis.

As Electrons Are Passed Through the System of Electron Carriers