Six facts about the light dependent reaction
Chlorophyll and associated electron carriers are held on thylakoid membranes.
There are two forms of chlorophyll (I and II).
Light excites electrons in chlorophyll which then leave the molecule.
Electrons pass back to chlorophyll II from water. This is called photolysis It generates oxygen gas and hydrogen ions.
Electrons pass to chlorophyll I from chlorophyll II through electron carriers. This generates ATP.
The electrons from chlorophyll I and hydrogen ions from water reduce NADP.