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What can alter this process of cellular respiration????

What can alter this process of cellular respiration????. POISONS!!. 6.11 CONNECTION: Certain poisons interrupt critical events in cellular respiration. There are three different categories of cellular poisons that affect cellular respiration

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What can alter this process of cellular respiration????

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  1. What can alter this process of cellular respiration???? POISONS!!

  2. 6.11 CONNECTION: Certain poisons interrupt critical events in cellular respiration • There are three different categories of cellular poisons that affect cellular respiration • The first category blocks the electron transport chain (for example, rotenone, cyanide, and carbon monoxide) • The second inhibits ATP synthase (for example, oligomycin) • Finally, the third makes the membrane leaky to hydrogen ions (for example, dinitrophenol)

  3. Rotenone: pesticides • Cyanide: couple different kinds, chemical engineers • Carbon Monoxide: car fumes • Oligomycin: in some antibiotics • Dinitrophenol: herbicides

  4. Cyanide, carbon monoxide Rotenone Oligomycin H+ H+ ATP synthase H+ H+ H+ H+ H+ DNP FADH2 FAD O2 + 2 1  2 H+ NADH NAD+ H+ ATP ADP + P H+ H2O H+ Chemiosmosis Electron Transport Chain

  5. 6.12 Review: Each molecule of glucose yields many molecules of ATP • Recall that the energy payoff of cellular respiration involves (1) glycolysis, (2) alteration of pyruvate, (3) the citric acid cycle, and (4) oxidative phosphorylation • The total yield of ATP molecules per glucose molecule has a theoretical maximum of about 38 • This is about 40% of a glucose molecule potential energy • Additionally, water and CO2 are produced

  6. Electron shuttle across membrane Mitochondrion Cytoplasm NADH NADH 2 2 (or 2 FADH2) NADH 6 2 FADH2 NADH 2 OXIDATIVE PHOSPHORYLATION (Electron Transport and Chemiosmosis) GLYCOLYSIS 2 Pyruvate 2 Acetyl CoA CITRIC ACID CYCLE Glucose  2 ATP  about 34 ATP  2 ATP by substrate-level phosphorylation by oxidative phosphorylation by substrate-level phosphorylation About 38 ATP Maximum per glucose:

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