Question

The first acceptor of electrons from an excited chlorophyll molecule of pigment system II is

• A. Iron sulphur protein
• B. Ferredoxin
• C. Quinone
• D. Cytochrome

Answer 1

Answer: (C)

Quinone

The first acceptor of electrons from an excited chlorophyll molecule of pigment system II is plastoquinone, which then transfers electrons to cytochrome $b_6$f.
Iron sulphur protein is the part of photosystem I, which is the first electron acceptor in PS- I.
Ferredoxin accepts electrons from PS I.
Cytochrome accepts electrons from plastoquinone.

Thus, the correct answer is option C.