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chapt07_lecture

chapt07_lecture - 7.1 Cellular Respiration The ATP...

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7.1 Cellular Respiration The ATP molecules that provide energy to eukaryotic cells are produced during cellular respiration . During cellular respiration, the mitochondria take in O 2 and release CO 2 . Cellular respiration is the reason that animals breathe.
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7.1 Cellular Respiration (cont.) Oxidation , the removal of hydrogen atoms from a molecule, is a central reaction in cellular respiration. reduction 6 CO 2 + 6 H 2 O + energy C 6 H 12 O 6 + 6 O 2 oxidation
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7.1 Cellular Respiration (cont.) The breakdown of glucose during cellular respiration releases energy. The slow oxidation of glucose in the mitochondria allows the energy to be removed slowly and stored as ATP.
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Phases of Complete Glucose Breakdown Cellular respiration involves a metabolic pathway of enzymes assisted by coenzymes . The two coenzymes involved in cellular respiration, NAD + and FAD + , receive the hydrogen atoms removed from glucose.
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Phases of Complete Glucose Breakdown (cont.) The complete oxidation of glucose involves four phases. Glycolysis , the splitting of glucose into two 3-carbon molecules The preparatory reaction , which divides each 3- carbon molecules into a 2-carbon molecule and CO 2 The citric acid cycle , which produces CO 2 , NADH, FADH 2 , and ATP The electron transport chain , which assists in the production of the largest amount of ATP
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Phases of Complete Glucose Breakdown (cont.)
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Outside the Mitochondria: Glycolysis Glycolysis takes place in the cytoplasm of the cell. During glycolysis, glucose (a 6-carbon molecule) is broken down to two pyruvate (3- carbon) molecules.
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