A) Ferredoxin
B) Cytochrome
C) Plastocyanin
D) An iron sulphur protein
Correct Answer: D
Solution :
In photosystem I or photoact I electrons released by P-700 are accepted by a substance of iron-sulpur protein complex denoted as A (Fes). A (FeS) is thus reduced and it passes these high electron to oxidized ferredoxin and it gets reduced. From reduced Fd, these electrons are passed to FAD which are now reduced to \[FAD{{H}_{2}}\]and then electrons and hydrogen are accepted by NADP which makes\[NADP{{H}_{2}}.\]Here photosystem 1 ends.
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