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Photosynthesis and Respiration

Photosynthesis and Respiration
The followings are the products of the light reactions of photosynthesis except

glucose
oxygen
ATP
NADPH

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

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

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Photosynthesis and Respiration
Carbon dioxide is reduced in

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

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

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Photosynthesis and Respiration
NADP+ is reduced to NADPH during

calvin cylcle
light dependent reactions
none of these
photorespiration

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