key concept9.1Cells Harvest Chemical Energy from Glucose Oxidation
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How do cells obtain energy from glucose?
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Redox reactions transfer electrons and energy
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The coenzyme NAD+ is a key electron carrier in redox reactions
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An overview: Harvesting energy from glucose
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key concept9.2In the Presence of Oxygen, Glucose Is Fully Oxidized
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In the glycolysis pathway, glucose is partially oxidized
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Pyruvate oxidation links glycolysis and the citric acid cycle
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The citric acid cycle completes the oxidation of glucose to CO2 | life11e_ch09_11.html | 57742271757a2e5d11000000 |
Pyruvate oxidation and the citric acid cycle are regulated by the concentrations of starting materials
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key concept9.3Oxidative Phosphorylation Forms ATP
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What are the steps in oxidative phosphorylation?
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The respiratory chain transfers electrons and protons, and releases energy
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ATP is made through chemiosmosis
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Experiments demonstrate chemiosmosis
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Some microorganisms use non-O2 electron acceptors
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key concept9.4In the Absence of Oxygen, Some Energy Is Harvested from Glucose
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Cellular respiration yields much more energy than fermentation
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The yield of ATP is reduced by the impermeability of mitochondria to NADH
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key concept9.5Metabolic Pathways Are Interrelated and Regulated
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Catabolism and anabolism are linked
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Catabolism and anabolism are integrated
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Metabolic pathways are regulated systems
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Apply What Youâve Learned
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