Compared to other photopigments in the light harvesting complexes (LHC)...?

Question

...describe the unique roles of P680 and P700 in the photoreduction of NADP+.

Answer 1

P680 is the reaction center in photosystem II. It's the part that gives up the electrons to pass down the electron transport chain to photosystem I. P700 is the reaction center in photosystem I. It's the part that gives up the electrons to pass to NADP+.