BB lecture 10-23-09 citric acid cy.

BB lecture 10-23-09 citric acid cy. - Chapter 9(pp.170-172...

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Chapter 9 (pp.170-172) – Aerobic Respiration - the Citric Acid Cycle Learning objectives: • Describe the overall process of the citric acid/Krebs cycle . - Know what “goes in” and what “comes out” • Compare the ATP production by glycolysis with that of the citric acid cycle . • Know the roles of the coenzymes in glycolysis and the citric acid cycle (pp.172-177) Aerobic Respiration - Chemiosmosis & oxidative phosphorylation, Learning objectives: • Of the electron transport “chain” (ETC ), be able to describe: - Its location - What it consists of - How ‘chain links’ are arranged according to greater electronegativities - The creation of a proton gradient - The ATP-generating enzyme - The role of oxygen The ATP production of the ETC
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Figure 9.9 Glycolysis: Energy investment phase
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Figure 9.9 Glycolysis: energy payoff phase
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Electrons carried via NADH Glycolysis Glucose Pyruvate ATP Substrate-level phosphorylation Electrons carried via NADH and FADH 2 Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis ATP ATP Substrate-level phosphorylation Oxidative phosphorylation Mitochondrion Figure 9.6 Glycolysis and citric acid cycle of cellular respiration
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The citric acid cycle completes the energy- yielding oxidation of organic molecules The citric acid cycle Takes place in the matrix of the mitochondrion Produces 1 ATP per cycle Cycles twice per glucose molecule Produces CO 2
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