BIO 110 Lecture Notes - Lecture 9: Beta Oxidation, Coenzyme A, Anaerobic Respiration
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28 Dec 2016
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The breakdown of organic molecules is exergonic. Fermentation-partial degradation of sugars that occurs without o2 (anaerobic respiration) Aerobic respiration- consumes organic molecules and o2, and yields atp. Redox reactions are the key to respiration. The chemical reaction that transfer electrons between reactants are called oxidation- reduction reactions (redox reactions) Reduction- a substance gains electrons (gets reduced) Some redox reactions do not transfer electrons but change how an electron is shared in covalent bonds. Equal sharing of electrons in covalent bonds= non-polar bond= high energy bond. Unequal sharing of electrons in covalent bonds = polar bond = low energy bond. Refers to both aerobic and anaerobic respiration. In many animals the preferred fuel is the sugar glucose. Can use other form of fuels (carb, fats, proteins) During aerobic respiration, the fuel is oxidized, and o2 is reduced. If glucose was burned in a fire, the reaction would occur in one step with a large release of energy.
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