311C F07 Exam 3 Review

311C F07 Exam 3 Review - Exam 3 Review Checklist Chapter 9...

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Exam 3: Review Checklist 11/19/07 Chapter 9: pages 168-178 Catabolic pathways Anaerobic: glycolysis and fermentation C6H12O6 + 6 O2 6 CO2 + 6 H2O + Energy Redox reactions Stepwise energy harvesting: NAD+ and ETC Glycolysis: Location, goal, starting products, end products Glucose 2 pyruvate Net: 2 ATP, 2NADH Pyruvate Acetyl CoA: Location, goal, starting product, end products Release 2 CO2 Net: 2 NADH Citric acid cycle (Krebs cycle): Location, goal, starting product, end products Input: acetyl CoA Release: 4 CO2 Substrate-level phosphorylation FAD FADH2 (and NAD+ NADH + H+) Net: 2 ATP, 6 NADH, 2 FADH2 Regeneration of oxaloacetate (oxaloacetate + acetyl CoA citrate) Oxidative Phosphorylation: Location, goal, starting product, end products Electron transport chain (NADH, FADH2, O2, 4 complexes: NADH v. FADH2; GOAL!) ETC and proton pumps (NADH v. FADH2): direction of pumping Chemiosmosis (GOAL!) Proton (H + ) gradient ATP synthase Net ATP Yield of Cellular Respiration: contributions from each stage; variability, efficiency Fermentation Goal: Regeneration of NAD+ (why?) Alcohol fermentation Lactic acid fermentation Aerobic v. anaerobic: efficiency, regeneration of NAD+, final electron acceptor Versatility of catabolism: different sources of fuel for cellular respiration Intersection of glycolysis and citric acid cycle with biosynthetic pathways
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311C F07 Exam 3 Review - Exam 3 Review Checklist Chapter 9...

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