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Photosynthesis and Respiration

Photosynthesis and Respiration
Hydrogen (electron) acceptor in the light reactions is

ADP
FADH
NAD+
NADP+

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Photosynthesis and Respiration
What do NAD+, NADP+, and FAD+ all have in common?

They have a full complement of electrons
They are reduced
They are oxidized
They are what is used during carbon fixation in photosynthesis

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Photosynthesis and Respiration
The electrons that are released by the splitting of water during photosynthesis ultimately end up in

ATP
O2
NADPH
rubisco

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Photosynthesis and Respiration
Where do the protons come from that make up the proton gradient used in the light reactions of photosynthesis?

H2O
Glucose
NADPH
ATP

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

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Photosynthesis and Respiration
Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?

Light reactions of photosynthesis
Carbon fixation
Fermentation
Dark reactions of photosynthesis

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