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Photosynthesis and Respiration

Photosynthesis and Respiration
In the initial step of photosynthesis, sunlight energizes the electron pair of

water
chlorophyll pigments
adenosine triphosphate (ATP)
carbon dioxide

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Photosynthesis and Respiration
In the Calvin cycle, carbon dioxide is fixed in a reaction with the

ribulose diphosphate
3-phosphoglyceric acid
ribose tri phosphate
ribulose phosphate

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Photosynthesis and Respiration
NADP+ is reduced to NADPH during

none of these
photorespiration
light dependent reactions
calvin cylcle

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Photosynthesis and Respiration
Carbon dioxide is reduced in

the Calvin cycle
the light reactions
noncyclic photophosphorylation
both light and dark reactions

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Photosynthesis and Respiration
In noncyclic photophosphorylation, the ultimate acceptor of electrons that have been produced from the splitting of water is

carbon dioxide
chlorophyll b
chlorophyll a
NADP+

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Photosynthesis and Respiration
What do NAD+, NADP+, and FAD+ all have in common?

They have a full complement of electrons
They are reduced
They are oxidized
They are what is used during carbon fixation in photosynthesis

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