Multiple Choice
Which part of the photosystem is responsible for accepting a light photon?
12. Photosynthesis
Light Dependent Reactions
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Cyclic photophosphorylation is different than photosynthesis in what way?
A
Photosystem II reverses and generates CO2
B
Photosystem I reverses and transports and electron to the electron transport center
C
The entire process generates more NADPH than ATP
D
Photolysis doesn't occur
Verified step by step guidance1
Understand that cyclic photophosphorylation is a process that occurs in the thylakoid membranes of chloroplasts, primarily involving Photosystem I.
Recognize that in cyclic photophosphorylation, electrons are excited by light energy in Photosystem I and are transferred to an electron transport chain.
Note that unlike non-cyclic photophosphorylation, cyclic photophosphorylation does not involve Photosystem II, and therefore, photolysis (the splitting of water molecules) does not occur.
Acknowledge that the primary purpose of cyclic photophosphorylation is to produce ATP without the production of NADPH or oxygen, as electrons are cycled back to Photosystem I.
Understand that this process is used by plants to balance the ATP/NADPH energy budget during photosynthesis, especially when there is a higher demand for ATP.
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Light Dependent Reactions practice set
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