What 3 steps does light reaction occur?

Pigments in thylakoid membranes that absorb sunlight and give up electrons to membrane proteins, these pigments are organized into 2 photosystems. Movement of electrons and H+ ions leads to production of NADPH and ATP Electrons released by pigments are replaced by splitting of H2O (Photolysis) producing O2 Overall result is the formation of ATP + NADPH which is used in the calvin cycle to make glucose