BIOL 110 Chapter Notes - Chapter 27: Cellular Respiration, Electron Transport Chain, Reduced Form

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Xe- + y --> x + ye- X is oxidized in this equation, y is reduced. More electronegative the molecule, the more likely it will become reduced: electrons and energy move from one to another. Redox and combustion: methane combustion releases energy with co2 and h2o as products. Energy is released that can do work (reaction is exergonic) The electrons that are associated with oxygen in the water molecule have much less energy than they had when associated with carbon in methane; this energy difference is released as heat. Redox and cellular respiration: o2 is highly electronegative - pulls electrons toward itself and away from other molecules. Takes energy to keep electrons away from o2. As electrons move closer to oxygen these lose energy and that energy can then be used to do work: cell respiration. Anabolism/synthesis of atp: c6 h12o6 + 6 o2 --> 6 co2 + 6 h2o + energy.

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