The Calvin cycle in a culture of algae grown in the light utilizes approximately 30,000 molecules of ATP but only 20,000 molecules of NADPH per hour.What is the source of the extra ATP utilized?
A)photosystem II
B)photosystem I
C)cyclic electron flow
D)oxidation of NADPH

Question

Quizplus · Accepted Answer

Cyclic electron flow around photosystem I generates additional ATP without producing NADPH, compensating for the higher ATP demand in the Calvin cycle.

The Calvin Cycle in a Culture of Algae Grown in the Light