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Green and purple bacteria carry out anoxygenic photosynthesis, using reduced molecules other than water, as an electron source for the generation of NADH and NADPH

- Purple sulfur bacteria use reduced sulfur compounds as electron sources and accumulate sulfur granules within their cell

- Green sulfur bacteria use reduced sulfur compounds as electron sources and deposit sulfur granules outside their cell

- Purple nonsulfur bacteria use organics molecules as their electron sourcec

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Q: In green and purple bacteria electrons to reduce CO2 come from?
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