Feb 14 Lecture

Feb 14 Lecture - Phosphofructokinase Key molecule in ATP...

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17:39 ATP synthase Protons enter rotor which spins clockwise when H +  ions flow past it down their gradient A stator anchored in the membrane holds the knob stationary A rod (or “stalk” extending into the knob also spins, activating catalytic sites in the knob Three catalytic sites in the stationary knob join inorganic phosphate to ADP to make  ATP ATP from glucose Glycolysis: 2 ATP by substrate-level phosphorylation Citric acid cycle: 2 ATP by substrate-level phosphorylation Oxidative phosphorylation: about 32 or 34 ATP, depending on which shuttle transports  electrons from NADH in cytosol Maximum per glucose: 36 or 38 ATP Anaerobic v. aerobic oxidation of glucose: fermentation Ethanol  Alcohol fermentation Lactate Lactic Acid fermentation The metabolism of virtually all biomolecules involves at least some of the reactions of  glycolysis and the citric acid cycle
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Unformatted text preview: Phosphofructokinase Key molecule in ATP synthesis! 2 ATP ATP + AMP Photosynthesis Light energy into synthesis of glucose 2 phases light lysis of water electron transport NADPH (for anabolism) catabolism: NADH oxidative phosphorylation Dark reactions NADPH and ATP drive CO 2 glucose Alternative pathways Anatomy of leaves Layer on the outside, waxy: prevents loss of water Stomata Chloroplast Intermembrane space Outer membrane Thylakoids organized into stacks called grana Chlorophyll goes from ground state to excited state Photon of light is absorbed by chlorophyll, and an electron goes to excited state while some heat is released along with the photon (fluorescence) Photosystem 1 and photosystem 2 Primary electron acceptor Electron transport chain Pq Cytochrome complex Pc ATP! 17:39 17:39...
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Feb 14 Lecture - Phosphofructokinase Key molecule in ATP...

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