Steps of glucose catabolism




• During digestion, complex carbohydrates are hydrolyzed into monosaccharides, primarily glucose. • The catabolism of glucose is the primary source of energy for cellular production of ATP. • The anabolism of glucose is important in regulating blood glucose levels. • Glucose catabolism, when oxygen is in adequate concentrations, is performed in four steps or enzymatic pathways. • Glycolysis. • Formation of acetyl coenzyme A. • Krebs cycle. • Electron transport chain. • Glycolysis is an anaerobic pathway because oxygen is not required to generate ATP. • The remaining pathways are aerobic because adequate oxygen concentrations are required.



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