MHT CET Medical202624 April 2026Morning ShiftBiologyRespiration in PlantsActual
Total number of ATP molecules utilised in one glycolytic pathway is _________.
Options
- A2
- B4
- C6
- D8
Correct answer
A. 2
Step-by-step solution
Glycolysis is the metabolic pathway that converts glucose into pyruvate. During the energy investment phase of glycolysis, ATP is consumed in two specific reactions: 1. Phosphorylation of glucose to glucose-6-phosphate, catalyzed by the enzyme hexokinase, utilizes 1 ATP molecule. 2. Phosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate, catalyzed by the enzyme phosphofructokinase, utilizes 1 ATP molecule. Therefore, a total of 2 ATP molecules are utilized in one glycolytic pathway. Answer: 2