NEET 2007 Biology question

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:

(1)QuinoneCorrect
(2)Cytochrome
(3)Iron-sulphur protein
(4)Ferredoxin.

Answer: (1)

Solution

In the Z-scheme, when the reaction centre P680 of photosystem II is excited, it ejects electrons which are accepted first by a quinone (plastoquinone-type primary acceptor) and then pass through the cytochrome b6-f

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Question ID VK-089771