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Cell Respiration An Animated Tour Glycolysis Glucose If NO O2 Glycolysis Cytoplasm Mitochondria Glycolysis Glucose If NO O2 Glycolysis Cytoplasm Mitochondria Glycolysis Glucose If NO O2 ATP Glycolysis Cytoplasm Mitochondria Glycolysis Glucose If NO O2 ATP Glycolysis Pyruvate Cytoplasm Mitochondria Glycolysis Glucose If NO O2 The process stalls here, because the flow of electrons (and H+ ions) stops. ATP Glycolysis Pyruvate Cytoplasm Mitochondria Glycolysis Glucose Only 2 ATP are made. If NO O2 ATP Glycolysis Pyruvate Cytoplasm Mitochondria Glycolysis Glucose If NO O2 In order to restart the flow of electrons in the absence of O2, the cell must FERMENT the pyruvate. ATP Glycolysis Pyruvate Cytoplasm Mitochondria Fermentation I Glucose This There Andprocess They Yeasts they produce are useTWO produce ALCOHOLIC is IRREVERSIBLE ALCOHOL WATER types CARBON ofFERMENTATION. fermentation. because DIOXIDE carbon is lost. If NO O2 Alcohol CO2 Fermentation H2O ATP Glycolysis Pyruvate Cytoplasm Mitochondria Fermentation II Glucose The Many In This During As Pyruvate bacterial activity pyruvate build bacteria periods up isslows, fermentation, converted of now & of lactic some Ointense enters acid to animal again aerobic LACTIC activity, lactic creates reach muscle acid ACID. respiration leg anthe builds OXYGEN muscles cells muscle uptoDEBT operate in“repay” tissue and the 2 can perform environment (muscle without the oxygen lactic debt! soreness). O LACTIC acid (sauerkraut is ACID converted lactic FERMENTATION. acid orback yogurt) fermention. to pyruvate & lowers. pH. .. 2, using If NO O2 Fermentation ATP Glycolysis Pyruvate Lactic acid Cytoplasm Mitochondria Glycolysis Glycolysis Animation Kreb’s Cycle Kreb's Cycle Animation Electron Transport Electron Transport Chain Animation Aerobic Pathways Glucose +-+power + ions +through +SYNTHETASE The And The H electrons e strip ions HIGH LEAK & the ENERGY H out ETC ofion this e are and space passed H forcing to the from the ELECTRON ATP H the ions fuel Pyruvate Convert Kreb’s some enters cycle bond the acts KREB’s energy like a-pump, molecular CYCLE to ATP .ions .molecules .blender, systematically The H ions are moved by CARRIER Finally, OverallOATP molecules YIELD is are 2 + REDUCED 2 + 34 = by 38 GAINING the LOW 2 pyruvate, dismantling breaking bonds to produce CO .. molecules. TRANSPORT against their CHAIN concentration for further gradient processing into the . . . INNER enzymes which use this force to PHOSPHORYLATE ADP2 . + ENERGY e andSPACE. the H ions to form WATER. MEMBRANE ATP ATP Glycolysis 2 Pyruvate Cytoplasm O2 O2 present 2 ATP Kreb’s Cycle NADH FADH CO2 (Matrix) Electron Transport Chain (Cristae) Mitochondria H2 O ATP 34 The Whole Enchilada (Una vez más) Alcohol Glucose CO2 If NO O2 Fermentation H2O ATP Glycolysis Lactic acid Pyruvate O2 O2 present ATP Kreb’s Cycle NADH FADH CO2 (Matrix) Electron Transport Chain (Cristae) Cytoplasm Mitochondria H2 O ATP THE END