Question

1. atp generated during photosynthesis comes from

a. photosystem i
b. photosystem iii
c. calvin cycle
d. between photosystem i and photosystem ii
e. none of these

Explanation:

During photosynthesis, ATP is generated through the electron - transport chain which occurs between Photosystem II and Photosystem I. The movement of electrons through this chain creates a proton gradient that is used by ATP synthase to produce ATP. There is no Photosystem III. The Calvin cycle uses ATP rather than generating it directly from the light - dependent reactions.

Answer:

D. between Photosystem I and Photosystem II