Glycolysis, in which glucose molecules are broken down to form pyruvic acid molecules; the Krebs cycle, in which pyruvic acid is further broken down and the energy in its molecule is used to form high-energy compounds such as NADH; and the electron transport system, in which electrons are transported along a series of coenzymes and cytochromes and the energy in the electrons is released and chemiosmosis, in which the energy given off by electrons is used to pump protons across a membrane and provide the energy for ATP synthesis (Reece, Urry, Cain, Wasserman, Minorsky, Jackson 2014) . ... A...

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