BIOL 1000 Chapter Notes - Chapter 6: Chemiosmosis, Hydrolysis, Electrochemical Gradient
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12 Dec 2016
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Outline the membranes and compartments of the mitochondrion. Mitochondria = citric acid cycle and oxidative phosphorylation. Cytosol: glycolysis: largest generator of atp in the cell. Glycolysis: oxidizes the 6 carbon sugar glucose, produces 2 molecules of 3-carbon compound pyruvate. Glycolysis converts glucose into 1 molecules of 3c pyruvate. Since glucose has been oxidized, the potential energy in 2 molecules of pyruvate is less than of 1 glucose molecule. Stage of respiration where the remaining carbon atoms that were originally in glucose at start of glycolysis are converted into carbon dioxide. Etc and oxidative phosphorylation are coupled processes: coupled process: results in a net release of heat, spontaneously usually the hydrolysis of atp releases energy. If excess atp is present in cytosol, it binds to phosphofructokinase, inhibiting activity: results in decrease of 1,6-biphosphate, stopping/slowing glycolysis, phosphofructokinase is active again when metabolic demands consume the excess.
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