Why Are 2 ATP Used in Glycolysis?

The 2 ATP are used in the first half of the glycolysis, which is an energy-requiring phase. Two phosphate groups get attached to glucose and produce Fructose 1, 6-bisphosphate. The phosphate groups come from the hydrolysis of ATP to ADP. Fructose 1, 6-bisphosphate splits into two 3C triose phosphates.

  • Glucose → Glucose 6-phosphate
  • Fructose 6-phosphate → Fructose 1, 6-bisphosphate


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