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Unformatted text preview: Chapter 9 Catabolism (cell respiration) ATP (energy fuel) Fermentation- partial degradation of sugars without oxygen (anaerobic) Cellular Respiration- most efficient and prevalent catabolic pathway for energy production where oxygen is consumed as a reactant Cell Resp. Equation- glucose sugar (C 6 H 12 O 6 ) + oxygen (O 2 ) carbon dioxide (CO 2 ) + water (H 2 0);exergonic, where ΔG is negative Redox Reactions- chemical reaction with one or more electrons from one reactant to another Oxidation (OIL)- “oxidizing is losing” electrons; since the reactant that oxidizes is losing electrons, it is the reducing agent Reduction (RIG)- “reducing is gaining” electrons’ since the reactant that reduces is gaining electrons, it is the oxidizing agent General Application: sugar (C 6 H 12 O 6 ) + oxygen (O 2 ) carbon dioxide (CO 2 ) + water(H 2 O) ; where “oxidized and reduced” Stepwise Harvest of Electrons- in Glycolysis and Kreb’s, NAD+ and FADH 2 that build up for oxidative phosphorylation in ETC Substrate-Level Phosphorylation- enzyme transfers phosphate group from substrate to ADP (only Glycolysis and Kreb’s Cycle) Glycolysis- splitting of sugar into two 3-Carbon sugars of pyruvate with a gross of 4ATP and 2ATP investment; occurs in...
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This note was uploaded on 08/27/2010 for the course BIO 8432 taught by Professor Lang during the Spring '10 term at Northwestern IA.
- Spring '10
- Cellular Respiration