The Biology Project: Biochemistry

Photosynthesis Problem Set 1

Problem 5: Overall energy source

The overall source of energy for photosynthesis is:
A energy of electron transport in the thylakoid membrane

B energy released when water is oxidized and oxygen is produced

C energy from the hydrolysis of ATP

D light energy from the sun

Light energy excites pigments in the thylakoid membranes, beginning the chain of reactions for photosynthesis.

E energy from the reduced electron carriers NADH and FADH2

The Biology Project
University of Arizona
Thursday, October 3, 1996
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