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1) Yes, most cells in the body derive energy from oxidative metabolism, unless oxygen is not available for some reason. There are some exceptions, for example red blood cells lack mitochondria and so have no respiration, and various types of rapidly proliferating cells such as activated immune cells have high glycolysis and lactate production (for reasons ...


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You do not need to merge anything. Photosynthesis already includes the electron transport across the inner membrane of the chloroplast (in case of plants) or across the bacterial membrane (in case of bacteria), creating voltage difference between inner and outer side. The only problem, this voltage is relatively difficult to take away.


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What you're describing is a phototrophic biofilm microbial fuel cell! They're pretty neat. Essentially the sun powers the bacteria and the bacteria in the anaerobic side passes electrons through the graphite electrode to use oxygen at the cathode. There's another explanation here. You could also "unfold" cyanobacteria and layer them and you'd probably get ...



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