Question

In noncyclic photophosphorylation, PS I is reduced by:

• A. Electron from ferredoxins
• B. Electron from PS II
• C. Hydrogen from PS II
• D. Hydrogen from water

Answer 1

The correct option is B Electron from PS II

In noncyclic photophosphorylation, PS I is reduced by an electron from PS II. When light excites P-${}_6$${}_8$${}_0$ it releases electrons and via intermediate electrons transporters it reaches PS I.

So, the correct answer is option B.