Question
Biology Question on Photosynthesis in higher plants
In photosystem-I, the first electron acceptor is :
A
ferredoxin
B
cytochrome
C
plastocyanin
D
an iron-sulphur protein
Answer
an iron-sulphur protein
Explanation
Solution
Photosystem I contains a complex of proteins and pigments that capture and transfer electrons during the light-dependent reactions of photosynthesis. The first electron acceptor in PS I is an iron-sulfur protein that receives electrons from the reaction center chlorophyll molecule. These electrons are then transferred through a series of carriers, including ferredoxin and eventually contribute to the reduction of NADP+ to NADPH.
So, the correct option is (D): an iron-sulphur protein