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Cyclic and Noncyclic Photophosphorylation
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View the animation below, then complete the quiz to test your knowledge of the concept.






1Cyclic photophosphorylation produces
A)energy only.
B)reducing power only.
C)both energy and reducing power.
D)neither energy nor reducing power.
E)either energy or reducing power, depending on the organism.



2In noncyclic photophosphorylation, the electrons passed down through the electron transport system are obtained from
A)sunlight.
B)sugar.
C)chlorophyll.
D)water.
E)carbon dioxide.



3Which of the following represents a correct sequence in noncyclic photophosphorylation?
A)photosystem I -> ATP production -> photosystem II -> NADPH production
B)photosystem I -> NADPH production -> photosystem II -> ATP production
C)photosystem II -> ATP production -> photosystem I -> NADPH production
D)photosystem II -> NADPH production -> photosystem I -> ATP production
E)photosystem I -> photosystem II -> ATP production -> NADPH production



4Cyclic photophosphorylation involves a single photosystem.
A)True
B)False



5Oxygen is produced in noncyclic photophosphorylation but not in cyclic photophosphorylation.
A)True
B)False







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