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Photosynthesis and Respiration

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

chlorophyll pigments
adenosine triphosphate (ATP)
carbon dioxide
water

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Photosynthesis and Respiration
NADP+ is reduced to NADPH during

photorespiration
calvin cylcle
none of these
light dependent reactions

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Photosynthesis and Respiration
What process in cellular respiration is essentially the reverse of carbon fixation in photosynthesis?

Glycolysis
Alcohol fermentation
Oxidative phosphorylation
Citric acid cycle

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

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

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Photosynthesis and Respiration
During the light-dependent reactions of photosynthesis, which of the following does not occur?

Release of oxygen
Carbon dioxide fixation
Absorption of light energy by photosystems
Splitting of water

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Photosynthesis and Respiration
The end products of noncyclic photophosphorylation are

water, ADP and NADP+
carbon dioxide, PGAL (phosphoglyceraldehyde), and H2
carbon dioxide, ATP and water
O2, ATP and NADPH

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