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Photosynthesis and Respiration

Photosynthesis and Respiration
Which of the following serves as a reactant in photosynthesis and a product in cellular respiration?

ATP
CO2
Sunlight
O2

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Photosynthesis and Respiration
The electrons that are released by the splitting of water during photosynthesis ultimately end up in

O2
NADPH
ATP
rubisco

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Photosynthesis and Respiration
In oxygenic photosynthesis, water is split in order to provide the

electrons needed to reduce P680
O2 needed for the dark reactions
electrons needed to reduce NADH
electrons needed for cyclic photophosphorylation

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Photosynthesis and Respiration
The manufacture of ATP in both photosynthesis and respiration is made possible by

the action of ATP synthase
energy from the movement of electrons
All of these
the existence of a proton gradient across specific membranes

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Photosynthesis and Respiration
Carbon dioxide is reduced in

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

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Photosynthesis and Respiration
Assume the combined processes of photosynthesis and cellular respiration, the electrons that start as part of H2O at the beginning of the light reactions end up attaching to

O2 to make new H2O
electron transport carriers to make O2
NADPH to make new glucose
pyruvate to make ethanol

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