Photosynthesis Problem Set 1
Problem 3: Overall redox reaction
During noncyclic photophosphorylation, water is oxidized and the electrons from water pass through photosystem II and photosystem I before reducing:
A carbon dioxide
Each step in this pathway is a coupled oxidation-reduction reaction. Water is oxidized as a result of the light reaction of photosystem II. From photosystem II, electrons pass to plastoquinone to cytochromes to plastocyanin. Another light reaction at photosystem I activates electrons for transfer to ferredoxin, and finally to NADP+.
E ribulose 1,5-bisphosphate
The Biology Project
University of Arizona
Thursday, October 3, 1996
Contact the Development Team
All contents copyright © 1996. All rights reserved.