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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?

CO2
ATP
Sunlight
O2

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

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

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Photosynthesis and Respiration
The cytochrome c oxidase complex

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

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Photosynthesis and Respiration
If the oxygen is labeled in CO2 and provide this CO2 to a plant, where it is expected to find this labeled oxygen after the plant had undergone photosynthesis?

In the oxygen given off by the plant
In the carbohydrate produced
In the NADPH
In the water used

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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

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

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Photosynthesis and Respiration
Which of the following is the reduced form of a temporary electron carrier molecule?

ATP
NADP+
CO2
FADH2

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