The NADPH Required for the Calvin Cycle Comes From

Question

The NADPH required for the Calvin cycle comes from
A)reactions initiated in photosystem I.
B)reactions initiated in photosystem II.
C)the citric acid cycle.
D)glycolysis.
E)oxidative phosphorylation.

Accepted Answer

NADPH is produced through the light-dependent reactions, specifically photosystem I, which ultimately reduce NADP+ to NADPH. This NADPH is then used in the Calvin cycle for carbon fixation.