adenosine triphosphate aerobic alanine alanine cycle alanine transaminase aldolase anaerobic bisphosphoglycerate mutase carbohydrate metabolism citric acid cycle electron transport chain enolase enzyme epinephrine gerty cori glucokinase gluconeogenesis glycerol glycerol dehydrogenase glycerol kinase glycolysis hexokinase lactate dehydrogenase lactic acid lactic acidosis liver metabolism phosphoenolpyruvate carboxykinase phosphoglycerate kinase phosphoglycerate mutase pyruvate carboxylase pyruvate kinase pyruvic acid triosephosphate isomerase