Which of the following represents the CORRECT order of events in the two-photosy

Question

Which of the following represents the CORRECT order of events in the two-photosystem light reactions of photosynthesis? Photosystem I receives electrons from plastocyanin at the end of the electron transfer chain from the excited reaction center of photosystem II. Photosystem I is the first to receive a photon of light. Photosystem II receives electrons from plastocyanin at the end of the electron transfer chain from the excited reaction center of photosystem I. The final electron acceptor. NADP+ receives electrons from plastocyanin at the end of the electron transfer chain from the excited reaction center of photosystem I. Photosystem I receives electrons from ferredoxin at the end of the electron transfer chain from the excited reaction center of photosystem II.

Explanation / Answer

Answer = The correct order of events in two photosystems of light reaction of photosynthesis

photosystem I receives electrons from plastocyanin at the end of the electron tranfer chain from excited excited reaction center of photosystem II

Explanation =1] The pigments of PSII absorb energy of diff wavelength & funneled to reaction center

2] These electrons are taken by PQ(Plastoquinone ) through COQ

3]PQ transfers electrons to cytochrome b-6

4]From cytb-6 to cyt-f

5]From cytb-6 electrons are transfer to PC & then PSI

6]electrons are transfer to Ferredoxin (Fd)

7]Finally ele. are taken up by NADP .NADP retains electrons

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