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Figurę 22-14 The mitochondriul electron-transport chain. Iłie pathways of clcctron transfer (black) and proton pumping (red) arc indicatcd. Electrons are transferred between Complexes I and III by membrane-soluble CoO (O) and between Complexes
III and IV by the pcripheral membranę protein cytochrome c (Cyt c). Complex II (not shown) transfers electrons from succinate to CoQ. See the Animated Figures