Which statement is TRUE regarding the light-dependent reactions?

Question

A.They rely on energy provided by glucose synthesis.
B. Oxygen is required.
C. Without water, the system would shut down.
D. ATP and NADPH are needed.
E. They require green light.

Answer 1

C. is correct. Water is needed to provide H+ for ATP synthesis and for electrons that replenish the electrons flung out by chlorophyll in photosystem II.

Not A. Glucose synthesis does not provide energy; it stores energy.
Not B. Oxygen is a waste material that is given off.
Not D. ATP and NADPH are produced as a result of the light-dependent reactions.
Not E. Chlorophyll reflects green light and doesn't absorb or use it. That's why chlorophyll looks green.