Photosystem II functions as a light dependent water-plastoguinone oxidoreductase. What are the names of two reaction center proteins that hind electron transfer prosthetic groups, such as P680, Pheophytin and Plastoquinone?

C 4 PHOTOSYNTHESIS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	CP43 and CP47
B	D1 and D2
C	33kda and 23kda
D	FA and FS

Explanation:

Detailed explanation-1: -Abstract. Photosystem II (PSII), a light-driven water:plastoquinone oxidoreductase, is an integral membrane protein complex of 25 subunits.

Detailed explanation-2: -Pheophytin or phaeophytin is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the type II photosynthetic reaction center (RC P870) found in purple bacteria.

Detailed explanation-3: -Photosystem II (PSII) has a P680 reaction centre containing chlorophyll ‘a’ that uses light energy to carry out the oxidation (splitting) of water molecules, and to produce ATP via a proton pump.

Detailed explanation-4: -Kinetics and mechanism of electron transfer in intact photosystem II and in the isolated reaction center: Pheophytin is the primary electron acceptor.

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