Chapter%209%20Outline - Cellular Respiration Harvesting...

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Cellular Respiration: Harvesting Chemical Energy Living cells Open systems Require outside energy Figure 8.3 Energy flows through an ecosystem Figure 9.2 Catabolic Pathways and Production of ATP Catabolic pathways yield energy The breakdown of organic molecules is exergonic Two pathways for ATP production Cellular respiration most prevalent most efficient consumes oxygen yields the most ATP Fermentation occurs without oxygen Redox Reactions: Oxidation and Reduction Catabolic pathways transfer of electrons oxidation reduction Figure 2.13 Some redox reactions Do not completely exchange electrons Change the degree of electron sharing in covalent bonds Figure 9.3 Oxidation of Organic Fuel Molecules During Cellular Respiration During cellular respiration glucose is oxidized and oxygen is reduced Stepwise Energy Harvest via NAD+ and the Electron Transport Chain Cellular respiration oxidizes glucose in a series of steps Electron carrier Figure 9.4
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If electron transfer is not stepwise Figure 9.5 A
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Chapter%209%20Outline - Cellular Respiration Harvesting...

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