Lecture 4 - Announcements • Reading Chapter 19 pages...

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Unformatted text preview: Announcements • Reading: Chapter 19 pages 406-412 – Chapter 21 469-474 Harvesting Energy • Cells get energy from the food we eat • Extract energy stored in food molecules to make ATP that the cell can use to do work • Aerobic energy harvesting • Anaerobic energy harvesting O 2 H 2 O elect ron carri ers Electron transport chain 4 C O 2 C Citric Acid cycle C 2 acetyl CoA C 2 A T P 32 or 34 A T P Transition reaction (mitochondri on) 2 C O2 C C C C C C C gluc ose Glycoly sis (cytoplas m) C C C 2 pyruv ate C C C lact ate 2 C C + C A T P 2 NAD+ regeneration 2 Aerobic Energy Harvesting • Requires O2 • Cellular respiration Cellular Respiration • Comlete breakdown of glucose • C6H12O6+ 6 O2 6 H2O+6 CO2+Energy • Four phases: – Glycolysis – Transition reaction – Citric acid cycle – Electron transport chain Glycolysis • Occurs in cytoplasm • Splitting of sugar • Glucose (6C) 2 pyruvate (3C) • 2ADP * 2ATP (net) • 2NADP 2 NADH Transition Reaction • Occurs in mitochondrial matrix • 2 Pyruvate (3C) @ 2 Acteyl CoA (2C) • 2NAD+ 2NADH Citric Acid Cycle • Occurs in mitochondrial matrix • 2 Acteyl CoA (2C) 4 CO2 • 6 NAD+ 6 NADH • 2 FAD 2 FADH • 2 ADP 2 ATP Electron Transport Chain...
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This note was uploaded on 04/07/2008 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas.

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Lecture 4 - Announcements • Reading Chapter 19 pages...

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