Multiple Choice
How does the cyclic pathway of light-dependent reactions differ from noncyclic reactions?
A) Photolysis is performed by photosystem II in the cyclic pathway, but by photosystem II in the noncyclic pathway.
B) The noncyclic pathway uses electrons from water to produce ATP, while the cyclic pathway uses electrons from water to produce sugars.
C) The noncyclic pathway evolved before the cyclic pathway and does not produce sugars.
D) The cyclic pathway evolved before the noncyclic pathway and does not produce oxygen.
E) Although the noncyclic reactions evolved first, carbon fixation occurs in both cyclic and noncyclic reactions.
Correct Answer:

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Correct Answer:
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