The electrons of photosystem II are excited and transferred to electron carriers. From which molecule or structure do the photosystem II replacement electrons come?
A) the electron carrier, plastocyanin
B) photosystem I
C) water
D) oxygen

Question

Quizplus · Accepted Answer

The replacement electrons for photosystem II come from the splitting of water molecules during the light-dependent reactions of photosynthesis. This process, known as photolysis, releases oxygen as a byproduct and transfers electrons to the oxidized form of the artificial electron acceptor, P680+.

The Electrons of Photosystem II Are Excited and Transferred to Electron