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  4. In photosystem-I, the first electron acceptor is

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Q. In photosystem-I, the first electron acceptor is

MGIMS WardhaMGIMS Wardha 2011Photosynthesis in Higher Plants

Solution:

Photosystem- I (PS- I) is an integral membrane protein complex that absorbs solar energy and mediate electron transfer from plastocyanin to ferredoxin. Ferredoxin is the iron-containing sulphur protein, which is the first pigment that accepts electrons. The PS- I system comprises more than 110 cofactors, significantly more than photosystem- II.