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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?

Sunlight
O2
CO2
ATP

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Photosynthesis and Respiration
Carbon fixation requires the expenditure of ATP molecules which is generated by

formation of glucose during the Calvin cycle
replenishment of chlorophyll
None of these
ETS (electron transfer system) during the light reactions

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Photosynthesis and Respiration
The cytochrome c oxidase complex

accepts electrons from cyt c
all of these
donates four electrons to O2
pumps protons out of the matrix space

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

water
carbon dioxide
adenosine triphosphate (ATP)
chlorophyll pigments

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Photosynthesis and Respiration
The vast majority of the molecules that act as energy carriers to power cellular activities are made in

the mitochondria and chloroplasts
the cytosol
the Golgi apparatus
the nucleus

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Photosynthesis and Respiration
The rate of photorespiration in most plants increases at.higher temperatures. Some plants have evolved a somewhat round-about system to deal with this problem. This series of reactions is called

ETS (electron transfer system in light reactions
C4 pathway
Calvin cycle
Photosystem II

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