CTools020711lecture13

CTools020711lecture13 - Biology 172 Lecture 13: Monday,...

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Lecture 13: Monday, February 7, 2011 Biology 172 Today’s Outline Announcements •  This Week in Discussion:       Herbicides       Quiz on lectures 11, 12, 13 •  Cellular Respiration - Citric Acid Cycle - Electron Transport Chain - Oxidative Phosphorylation - ATP Yield - Catabolism of Other Fuels Photosynthesis - Overview - Light Reactions - Calvin Cycle
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Energy Yield Summary Electron shuttles span membrane CYTOSOL 2 NADH 2 FADH2 2 NADH 6 NADH 2 FADH2 2 NADH Glycolysis Glucose 2 Pyruvate 2 Acetyl CoA Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis MITOCHONDRION by substrate-level phosphorylation by substrate-level phosphorylation by oxidative phosphorylation, depending on which shuttle transports electrons from NADH in cytosol Maximum per glucose: About 30 ATP + 2 ATP + 2 ATP + a LOT of ATP or
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Fermentation Anaerobic reactions Provide NAD+ to re-charge glycolysis Lower energy yield - only 2 ATP per glucose Fermentation by-product Intermediate accepts electrons from NADH
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Figure 9.24 Cellular Respiration and Fermentation Are Alternative Pathways for Producing Energy Cellular respiration If electron acceptor (such as oxygen) is present If electron acceptor (such as oxygen) is NOT present
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Electrons Cytosol Mitochondrial matrix Maximum yield of ATP per molecule of glucose: 29 Electron transport chain Oxidative phosphorylation Figure 9.23
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Friday’s Outline Review Glycolysis Fermentation Formation of Acetyl CoA Cellular Respiration - Citric Acid Cycle - Electron Transport Chain - Oxidative Phosphorylation - ATP Synthase - ATP Yield - Catabolism of Other Fuels
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Amino acids Sugars Glycerol Fatty acids Glycolysis Glucose Glyceraldehyde-3-
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This note was uploaded on 02/13/2012 for the course BIO 172 taught by Professor Clark during the Winter '08 term at University of Michigan.

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CTools020711lecture13 - Biology 172 Lecture 13: Monday,...

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