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MHT CET Medical202626 April 2026Morning ShiftBiologyRespiration in PlantsActual

How many ATP molecules are utilized in the glycolysis of a glucose molecule?

Options

  1. A8
  2. B6
  3. C4
  4. D2

Correct answer

D. 2

Step-by-step solution

Glycolysis involves an energy investment phase where ATP is consumed. One ATP molecule is utilized during the conversion of glucose to glucose-6-phosphate, catalyzed by the enzyme hexokinase. Another ATP molecule is utilized during the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate, catalyzed by the enzyme phosphofructokinase. Therefore, a total of 2 ATP molecules are utilized in the glycolysis of a single glucose molecule. Answer: 2

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