In the cyclic pathway of the light-dependent reactions, electrons ejected from photosystem I enter the electron transport system before returning to ____.
A)photosystem II
B)photosystem I
C)the stroma
D)the outer chloroplast membranes
E)ATP synthase

Question

Quizplus · Accepted Answer

In the cyclic pathway of the light-dependent reactions, electrons ejected from photosystem I enter the electron transport system and are used to generate ATP. These electrons eventually return to photosystem I, completing the cyclic pathway. Therefore, the answer is photosystem I (choice B).

In the Cyclic Pathway of the Light-Dependent Reactions, Electrons Ejected