Cyclic Phosphorylation - LDS

1

light energy hits PS1, energy is passed to chlorophyll A in reaction center by accessory pigments and excites e-

2

excited e- pass through the ETC in a series of redox reactions

the e- loses energy as it moves back up to Ps1

3

The ECs use energy to pump H+ from the stroma to the thylakoid space

forms an electrochemical gradient

4

H+ move through ATP synthetase by Facilitated diffusion

providing energy for photophosphorylation

ADP + Pi → ATP