In noncyclic photophosphorylation, the chlorophyll in photosystem I returns to its reduced state by

Question

Quizplus · Accepted Answer

In noncyclic photophosphorylation, photosystem I uses light energy to boost electrons to a high energy level, which are then passed down an electron transport chain to generate a proton gradient and ultimately produce ATP. However, to return its chlorophyll to its reduced state, photosystem I requires a source of electrons. These electrons are supplied by the electron transport chain of photosystem II, which is located upstream in the photosynthetic pathway. Thus, choice B is the correct answer.

In Noncyclic Photophosphorylation, the Chlorophyll in Photosystem I Returns to Its