Cellular respiration begins when electrons are transferred from NADH and FADH₂—through a series of chemical reactions to a final inorganic electron acceptor (either oxygen in aerobic respiration or no...Cellular respiration begins when electrons are transferred from NADH and FADH₂—through a series of chemical reactions to a final inorganic electron acceptor (either oxygen in aerobic respiration or non-oxygen inorganic molecules in anaerobic respiration). These electron transfers take place on the inner part of the cell membrane of prokaryotic cells or in specialized protein complexes in the inner membrane of the mitochondria of eukaryotic cells.
In respiration, high energy (highly reducing) electrons travel down an electron transport chain and are finally delivered to an externally derived oxidizing agent. In eukaryotes and many prokaryotes ...In respiration, high energy (highly reducing) electrons travel down an electron transport chain and are finally delivered to an externally derived oxidizing agent. In eukaryotes and many prokaryotes the electron donor is NADH, and the terminal electron acceptor in O2. Some of the -∆G of this series of redox reactions is stored as a proton gradient, formed by some of the electron carriers, which are also proton pumps. The energy stored in this gradient can be employed to power many +∆G processe
