∞ generated and posted on 2016.12.24 ∞
Description of the standard Z scheme of photosynthesis where electrons originate in photosystem II, flow through photosystem I, and end up reducing NADP+.
An outline description of the process looks like this:
(1) Photon capture by photosystem II
(2) Photosystem II oxidation/e- transfer to primary electron acceptor
(3) Energy transfer to reaction center chlorophyll
(4) Transfer of electron to electron transport chain
(5) Photophosphorylation
(6) Reduction of photosystem I
(7) Photon capture by photosystem I
(8) Energy transfer to reaction center chlorophyll
(9) Photosystem I oxidation/e- transfer to primary electron acceptor
(10) NADP+ reduction producing NADH
Photosystem II is then reduced via oxidation of water, generating molecular oxygen.
Compare to cyclic electron flow:
(9) Photosystem I oxidation/e- transfer to primary electron acceptor
(4) Transfer of electron to electron transport chain
(5) Photophosphorylation
(6) Reduction of photosystem I
(7) Photon capture by photosystem I
(8) Energy transfer to reaction center chlorophyll
(9) Photosystem I oxidation/e- transfer to primary electron acceptor