Figure 4.14 Stage I HOCH2 POCH2 D POCH2 ATP C=0 POCH2O H2COH PoCH20、H2Cp H2COH 2 NAD+ OH HO OH 2 OH OH 3 H OH OH OH OH HO H HC-O Glucose HC-OHs 6 Stage ll H2CO P 20 20 20 20 2 0=C 10 9 0=C 0=C 7 0=C-0p 0=C PO-C OH-C-H OH-C-H◆ CH3 CH, HO-CH2 PO-CH2 POCH2 F Pyruvate 2ATP 2 ATP +2 NADH,- 112 lactate Stage Ill 2 Pyruvate 1213 2 ethanol +2 CO2 Intermediates 1,3-Bisphosphoglycerate Enzymes 7Phosphoglycerokinase A Glucose 6-P G 3-P-Glycerate ①Hexokinase 8Phosphoglyceromutase B Fructose 6-P H2-P-Glycerate 2Isomerase 9 Enolase C Fructose 1,6-P ① Phosphoenolpyruvate 3Phosphofructokinase 10 Pyruvate kinase D Dihydroxyacetone-P 4 Aldolase 11 Lactate dehydrogenase EGlyceraldehyde-3-P 5Triosephosphate isomerase 12 Pyruvate decarboxylase Energetics 6 Glyceraldehyde-3-P 13 Alcohol dehydrogenase Yeast Glucose→2 ethanol+ -239kJ dehydrogenase 2C02 Lactic acid bacteria Glucose-2 lactate -196kJ 2012 Pearson Education,Inc.Figure 4.14 Stage I Stage II Stage III Glucose Pyruvate 2 Pyruvate 2 lactate 2 ethanol  2 CO2 Energetics Yeast Lactic acid bacteria Intermediates Glucose 6-P Fructose 6-P Fructose 1,6-P Dihydroxyacetone-P Glyceraldehyde-3-P 1,3-Bisphosphoglycerate 3-P-Glycerate 2-P-Glycerate Phosphoenolpyruvate Enzymes Hexokinase Isomerase Phosphofructokinase Aldolase Triosephosphate isomerase Glyceraldehyde-3-P dehydrogenase Phosphoglycerokinase Phosphoglyceromutase Enolase Pyruvate kinase Lactate dehydrogenase Pyruvate decarboxylase Alcohol dehydrogenase © 2012 Pearson Education, Inc