bio lecture 13. glycolysis

bio lecture 13. glycolysis - Glycolysis Dr. Mark Holbrook...

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1 Glycolysis Dr. Mark Holbrook 8.11 (b) Mechanical work: ATP binds noncovalently to motor proteins, then is hydrolyzed Membrane protein P i ADP + P Solute Solute transported P i Vesicle Cytoskeletal track Motor protein Protein moved (a) Transport work: ATP phosphorylates transport proteins ATP ATP Examples of ATP Energy Use (“P-class”) How Do Cells Make ATP? Respiration Fermentation
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2 Cellular Respiration Food energy cellular work C 6 H 12 O 6 + 6 O 2 6 H 2 O + 6 CO 2 + energy a - D-Glucose Glucose is the model food molecule Why Glucose? 5.6 Polymers of glucose are used by plants and animals for energy storage Oxidation of Glucose is Spontaneous If glucose is “burned” Glucose + O 2 CO 2 + H 2 O (heat also produced) Free (usable) Energy released How much? D G = _ 686 kcal/mole (1 mole is about 180 grams of glucose) slow burn (step-wise oxidations)
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3 Step-wise Oxidations A B C D A B C D Glucose H 2 O + CO 2 8.7 + O 2 An Overview of Cellular Energy Generation 9.6 CO 2 H 2 O Reduction-Oxidation (Redox) Reactions Oxidation = loss of electron Reduction = gain of electron becomes oxidized becomes reduced LEO goes GER In cells, oxidation of one substrate is always accompanied by reduction of another substrate
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4 9.3 Reactants
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bio lecture 13. glycolysis - Glycolysis Dr. Mark Holbrook...

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