Question

Which statement regarding photophosphorylation is CORRECT ?

• A. Cyclic photophosphorylation produces both ATP and NADPH.
• B. Non-cyclic photophosphorylation involves only PS I.
• C. Photolysis of water occurs in PS II
• D. ATP synthesis occurs in the thylakoid lumen.

Answer 1

Answer:

C. Photolysis of water occurs in PS II

• Photolysis of water, where H₂O splits into oxygen, protons, and electrons, happens specifically at Photosystem II (PS II) during non-cyclic photophosphorylation, providing electrons to replenish those excited in PS II.