Which of the following is the primary electro | vedclass

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(C) In the light-dependent reactions of photosynthesis,the process begins at Photosystem-$II$ $(PS-II)$.When the reaction center chlorophyll-$a$ $(P_{

Vedclass · Accepted Answer

Quinone

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(C) In the light-dependent reactions of photosynthesis,the process begins at Photosystem-$II$ $(PS-II)$.When the reaction center chlorophyll-$a$ $(P_{680})$ absorbs light,it gets excited and releases an electron.This excited electron is immediately captured by the primary electron acceptor,which is a molecule of pheophytin (a chlorophyll molecule lacking magnesium).Among the given options,the primary electron acceptor in the electron transport chain following $PS-II$ is often associated with the quinone pool (specifically plastoquinone).However,strictly speaking,the primary acceptor is pheophytin,which then transfers it to plastoquinone $(PQ)$.Given the standard options provided in many biology curricula,'Quinone' (Plastoquinone) is the correct choice as it acts as the primary mobile electron carrier in the chain.

Which of the following is the primary electron acceptor from the chlorophyll molecule of Photosystem-$II$?

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