Photosynthesis Question 96
96. $NADP^{+}$is reduced to $NADPH$ in
[1988]
(a) PS I
(b) PS II
(c) Calvin cycle
(d) Noncyclic photophosphorylation
Show Answer
Answer : d
Hints & Solution
(d) Non cyclic photophosphorylation is not only connected with ATP synthesis but also production of NADPH. It involves two photosystems-PSI and PSII. PSII (680) receives electrons from photolysis of water and transfer it to PSI (700) to form NADPH from $NADP^{+}$. The hydrogen required for reduction comes from breaking of water molecules.
