Compare and contrast the electron transport chain in photosynthesis and cellular respiration
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The difference is that in photosynthesis the electrons are moving due to the energy input of light while in cellular respiration the electrons were lent to the ETC by the NADH. Another difference is that in photosynthesis the primary electron acceptor is NADPH and in cellular respiration it is oxygen.
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Cellular Respiration. In cellular respiration the electron transport chain occurs after glucose has already been broken down. Eight molecules of NADPH and two molecules of FADH2 remain. ... At the very end of the process, electrons are accepted by oxygen, which then binds to the hydrogen ions in order to produce water
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