During what step of glycolysis are two atp molecules required?
Question: During what step of glycolysis are two atp molecules required?
Two ATP molecules are required during the first step of glycolysis, which is the phosphorylation of glucose. This step is catalyzed by the enzyme hexokinase.
In this step, ATP donates a phosphate group to glucose to form glucose-6-phosphate. This step is necessary to activate glucose so that it can be further metabolized in glycolysis.
The following is the chemical equation for the phosphorylation of glucose:
glucose + ATP → glucose-6-phosphate + ADP
The two ATP molecules required in glycolysis are used to activate glucose and to provide energy for the rest of the glycolytic pathway.
Glycolysis is a metabolic pathway that converts glucose into pyruvate with a net gain of two ATP molecules. It is the first step in cellular respiration, which is the process by which cells generate energy.
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