Question

Formation of NADPH occurs during

• A. Cyclic photophosphorylation
• B. Non - cyclic photophosphorylation
• C. Oxidative photophosphorylation
• D. Substrate level phosphorylation

Answer 1

Answer: (B)

Non - cyclic photophosphorylation

Cyclic photophosphorylation exists to provide energy for the calvin cycle and involves only p680 in photosystem ll and its product is ATP. Non-cyclic photophosphorylation is carried out using p700 in photosystem l and p680 in photosystem ll and it produces NADPH and ATP.

So, the correct option is 'Non - cyclic photophosphorylation'.