How many molecules of ATP will be generated in Krebs cycle, if a molecule of sucrose is completely oxidised and used as substrate?

Step-by-step solution

Sucrose is a disaccharide having one glucose and one fructose. 1 pyruvic acid in Kreb's cycle produces 12 ATP. One glucose molecule produces 2 pyruvate molecules in glycolysis. Fructose also enters glycolysis by forming fructose1,6 diphosphate. Therefore there will be two pyruvates from glucose and two from fructose, and each cycle producing 12 ATP. Therefore 12 × 4 = 48 ATP.