Protons (H⁺) accumulate in the thylakoid space during electron transport between photosystems I and II. The excess of protons in the thylakoid space A) enters the photorespiration pathway. B) converts NADP to NADPH and generates ATP in the process. C) is small enough to diffuse back out through the lipid bilayer. D) raises the pH of the space until the processes stop. E) moves from the thylakoid space to the stroma through an ATP synthase complex channel that generates ATP.

Question

Quizplus · Accepted Answer

The excess of protons in the thylakoid space moves through an ATP synthase complex channel, which generates ATP. This process is called chemiosmosis, and it is responsible for the production of ATP during the light-dependent reactions of photosynthesis. The movement of protons from the thylakoid space to the stroma down their electrochemical gradient drives the synthesis of ATP.

Protons (H+) Accumulate in the Thylakoid Space During Electron Transport

Protons (H⁺) Accumulate in the Thylakoid Space During Electron Transport