Electrons in chlorophyll of PS2 absorb light + get excited
Enter ETC
To replace electron lost
Photolysis of H2O -> O2 + H+ + e-
As the e- moves down ETC
Energy is lost
Energy used to pump H+ from stroma into thylakoid
Creates electrochemical gradient
H+ diffuse down this gradient
Back into stroma
Through ATP synthase
Via chemiosmosis
Spinning of ATP generates proton motive force
Synthesis ATP from ADP + Pi
e- in chlorophyll in PS1 absorb light
If sufficient light absorbed, e- leaves ETC, reduces NADP into NADPH (non-cyclic photophosphorylation)
If insufficient light absorbed, e- re-enters ETC (cyclic photophosphorylation)
Products that go into LIR: ATP, NADPH
