cyclic photophosphorylation

• Where does cyclic photophosphorylation occur?


  bacteria and primitive plants
• why would higher plants use cyclic photophosphorylation


  to provide extra atp
• When would higher plants use cyclic photophosphorylation


  when CO2 is in short supply
• which photosystem is used in cyclic photophosphorylation


  ps1
• what is the first step of cyclic photophosphorylation


  light photons are absorbed by ps1
• in cyclic photophosphorylation what happens after the light photons are absorbed into ps1


  the electrons become excited and accepted by an electron acceptor
• in cyclic photophosphorylation what happens after the electrons are accepted to an electron acceptor


  the electrons are passed down a chain of electrons carriers
• in cyclic photophosphorylation what happens after the electrons are passed back down the chain of electron acceptors


  the movement of electrons fuel the proton pumps to transport protons into the thylakoid space and leading to the production of ATP
• what happens at the end of cyclic photophosphorylation


  the originally excited electrons return to ps1