2006-11-08 15:43:11 · 3 answers · asked by Shushan A 2 in Science & Mathematics ➔ Biology
Cyclic photophosphorylation exists to provide energy for the Calvin Cycle. It involves only the P680 in photosystem II. The product of the cyclic photophosphorylation is ATP and there is no electron source because all electrons return to the system.
Non-cyclic photophosphorylation is carried out using both P700 in photosystem I and P680 in photosystem II. The primary electron source to replace the electron from photosystem I that has lost its electron is water. Oxygen is released from the water. Non-cyclic photophosphorylation produces both NADPH and ATP. Unlike cyclic photophosphorylation, the terminal electron acceptor is NADP+.
2006-11-08 22:10:38 · answer #1 · answered by r2data 2 · 5⤊ 5⤋
The end product of noncyclic photphosphorylation is NADPH+H which is later used in the Calvin-Benson cycle...cyclic photophosphoylation only produces ATP.
2006-11-08 16:12:19 · answer #2 · answered by Richard H 2 · 1⤊ 1⤋
I know this question was from ten years ago, but its actually photosystem I that is being used.
2016-03-22 05:17:11 · answer #3 · answered by Chanelle 1 · 1⤊ 0⤋