The electrons lost from the reaction center of photosystem II are replaced by electrons from A) CO₂. B) ATP. C) H₂O. D) photosystem I.

Question

Quizplus · Accepted Answer

The electrons lost from the reaction center of photosystem II are replaced by electrons from water molecules. During the light-dependent reactions of photosynthesis, water is oxidized, producing oxygen gas and hydrogen ions. The electrons from water are then used to replace the electrons lost from photosystem II.

The Electrons Lost from the Reaction Center of Photosystem II