Chloroplasts and mitochondria generate ATP by the same mechanism

Chloroplasts and mitochondria generate ATP by the same mechanism

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Chloroplasts and mitochondria generate ATP by the same mechanism: chemiosmosis. In both chloroplasts and mitochondria, an electron transport chain pumps protons across a  membrane as electrons are passed along a series of increasingly electronegative carriers. This process transforms redox energy to a proton-motive force in the form of an H gradient  across the membrane. ATP synthase molecules harness the proton-motive force to generate ATP as H diffuses back  across the membrane. Some of the electron carriers, including the cytochromes, are similar in chloroplasts and  mitochondria. The ATP synthase complexes of the two organelles are also very similar. There are differences between oxidative phosphorylation in mitochondria and  photophosphorylation in chloroplasts. In mitochondria, the high-energy electrons dropped down the transport chain are extracted  from organic
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Chloroplasts and mitochondria generate ATP by the same mechanism

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