chapter6_Lecture - How Cells Release Chemical Energy...

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How Cells Release Chemical Energy Chapter 6
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Organelles where aerobic respiration produces energy molecule ATP Mitochondrial diseases affect body’s ability to meet energy needs Mitochondria
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Mitochondrial Disorders Friedreich’s ataxia Mutant gene and abnormal protein product Iron accumulates, causes damage from free radicals
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Impacts, Issues Video When Mitochondria Spin Their Wheels
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Photosynthesizers get light energy from the sun, store it as chemical energy, and produce ATP Animals eat plants or other animals and transform chemical energy to ATP ATP: Universal Energy Source
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Making ATP Plants make ATP during photosynthesis Prokaryotes make ATP by fermentation Cells of most organisms make ATP by aerobic respiration of carbohydrates, fats, and protein
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Main Types of Energy-Releasing Pathways Aerobic pathways Evolved later Require oxygen Start with glycolysis in cytoplasm Completed in mitochondria Anaerobic pathways Evolved first Don’t require oxygen Start with glycolysis in cytoplasm Completed in cytoplasm
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Summary Equation for Aerobic Respiration 6 H 12 O 6 + 6O 2 6O 2 + 6H 2 O + ATP GLUCOSE OXYGEN CARBON DIOXIDE WATER
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Overview of Aerobic Respiration CYTOPLASM Glycolysis Electron Transfer Phosphorylation Krebs Cycle ATP ATP 2 CO 2 4 CO 2 2 32 water 2 NADH 8 NADH 2 FADH 2 2 NADH 2 pyruvate e - + H + e - + oxygen (2 ATP net) glucose Typical Energy Yield: 36 ATP e - e - + H + e - + H + ATP H + e - + H + ATP 2 4
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Overview of aerobic respiration Summary Equation for Aerobic Respiration
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The Role of Coenzymes NAD + and FAD accept electrons and hydrogen • Become NADH and FADH 2 Deliver electrons and hydrogen to the electron transfer chains
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A simple sugar (C 6 H 12 O 6 ) Atoms held together by covalent bonds Glucose
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This note was uploaded on 03/12/2011 for the course BIO 1002 taught by Professor Bush during the Fall '08 term at University of Minnesota Morris.

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chapter6_Lecture - How Cells Release Chemical Energy...

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