Chapter 4 - Figure 04.10 Glycolysis Glucose Pyruvic acid...

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CHAPTER 4 CELLULAR METABOLISM
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Outline Energy Enzymes ATP Cellular Respiration Metabolism Management
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Energy Types of energy Kinetic = motion Potential = stored Laws of thermodynamics First law Second law Types of reactions Exergonic = energy released Endergonic = energy consumed
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Entropy
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Enzymes Activation energy = energy required to drive a reaction Catalysts = chemical substances that accelerate a reaction Enzymes = organic catalysts
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Figure 04.03
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Enzymes Cofactors = assist enzymes Coenzymes = cofactors containing vitamins Substrate = molecule being catalyzed ES complex Active site Specificity
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ES Complex
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Enzymes Reactions Catabolic = breaking down Anabolic = building up Direction Hydrolysis
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ATP Coupled reactions Energy-coupling agent ATP High energy bonds
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ATP
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Coupling
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Cellular Respiration Redox reactions Reduction = gain electrons Oxidation = lose electrons Electron acceptors
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Redox Reactions
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Cellular Respiration Aerobic respiration Oxygen Anaerobic respiration No oxygen
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Unformatted text preview: Figure 04.10 Glycolysis Glucose Pyruvic acid NADH ATP 2 used 4 produced Figure 04.11 Krebs Cycle Acetyl-CoA Produced from pyruvic acids Each of 2 molecules enters cycle Carbon dioxide produced Water used NADH/FADH2 ATP 2 produced overall Electron Transport Chain Oxidative phosphorylation NADH and FADH2 molecules sent to electron transport chain Electrons are passed to electron acceptors Many molecules of ATP are produced Figure 04.01 Anaerobic Respiration Occurs without oxygen Lactic acid or ethanol (alcoholic fermentation) produced instead of pyruvic acid Much less efficient 2 ATP used 4 ATP produced Management of Metabolism Enzyme activity is regulated Quantity Activity Feedback Inhibition Enzyme Regulation Review Energy Enzymes ATP Cellular Respiration Metabolism Management Reminders Read Chapter 4 Exam 1...
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Chapter 4 - Figure 04.10 Glycolysis Glucose Pyruvic acid...

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