Question

Which of the following is the correct order of electron flow in the light reactions of photosynthesis?

Answer 1

Answer:

b) H2O → P680 chlorophyll a pair → PS II primary electron acceptor → Pq → cytochrome complex → Pc → P700 chlorophyll a pair → PS I primary electron acceptor → Fd → NADPH

Explanation:

The energy present in the photons is used to produce high energy electrons during the light chain of reactions. The H2O molecules generate P680 which is an excited chlorophyll molecule. Then the molecules are converted into pheophytin. The pheophytin produce special quinones which are QA and QB. This generates a plastoquinone pool.