107CellResp - Dr. Potter BI 107 CELLULAR RESPIRATION I....

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D r . P o t t e r B I 1 0 7 CELLULAR RESPIRATION I. Cellular Respiration - Oxidation of glucose (or other organics) to release energy in C-H bonds to form ATP for cellular work. A) Aerobic - Glucose oxidized to CO 2 using O 2 as final hydrogen acceptor (reduction) to form H 2 O. All multicellular plants, animals. B) Anaerobic - Glucose oxidized without oxygen. Inorganic electron acceptor such as NO 3 or SO 4 molecules. Some bacteria. C) Fermentation - glucose oxidized to pyruvate without oxygen. Low energy yield. Organic electron acceptor. Alcohol fermentation-yeast. Lactate fermentation-yeast, bacteria, muscle cells. D) Strict vs. Facultative. II. Emphasis on AEROBIC respiration. The carbon atoms are removed from glucose 1 at a time as carboxyl groups and are released as carbon dioxide which we breathe out (and plants use for photosynthesis). A) OXIDATION - all hydrogen atoms are also removed from glucose. Most of the energy in glucose is in these hydrogen atoms. After dehydrogenation, the hydrogen atoms are given to NAD and FAD. The NADH and FADH
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This note was uploaded on 11/04/2011 for the course BI 107 taught by Professor Fuller during the Spring '08 term at Montgomery College.

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107CellResp - Dr. Potter BI 107 CELLULAR RESPIRATION I....

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