Q. In photosystem-I, the first electron acceptor is :
A) ferredoxin
B) cytochrome
C) plastocyanin
D) an iron-sulphur protein
Explanation
[Solution from source] Electrons from excited P700 pass through bound iron-sulphur proteins of PS I before reaching ferredoxin, so the early acceptor is an iron-sulphur protein. Plastocyanin is the donor to PS I, not its acceptor, and ferredoxin comes later. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.