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

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

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Photosynthesis and Respiration
What do coenzyme A, CO2, oxaloacetate, and FADH2 all have in common?

They are all components or products of the citric acid cycle
They are part of the reactions of lactic acid fermentation
They are part of the dark reactions of photosynthesis
They are all elements of oxidative phosphorylation

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