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Photosynthesis and Respiration

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

carbon dioxide
adenosine triphosphate (ATP)
chlorophyll pigments
water

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Photosynthesis and Respiration
Which enzyme is involved in carbon-fixation reaction?

Cytochrome reductase
Ribulose bisphosphate carboxylase
Glycerol kinase
NADP reductase

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Photosynthesis and Respiration
In cells having organelles, the steps of the Krebs cycle and the electron transport system occur in the

cell membrane
endoplasmic reticulum
none of these
mitochondria

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Photosynthesis and Respiration
The end products of noncyclic photophosphorylation are

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

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

CO2
NADP+
ATP
FADH2

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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
pyruvate to make ethanol
NADPH to make new glucose

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