4.each photo excited electron passes from the primary electron acceptor of PS ll to PS l through the electron transport chin.
5.the exergonic fall of electron to a lower level provide energy for the synthesis of ATP.
6.light strikes through PS l to providing electron to fulfill P700.
7.photoexcited electrons are passes from the primary electron acceptor of PS l down a second electron transport chain through ferredoxin.
8.the enzyme NADP+ reductase catalyzes the transfer of electrons from fd to NADP+ and NADH is an end-product that readily available for the reactions of the Calvin cycle.