What are the irreversible reactions of glycolysis and how do they contribute to the overall regulation of the pathway?

The irreversible reactions of glycolysis are catalyzed by enzymes hexokinase, phosphofructokinase, and pyruvate kinase. These reactions help regulate the flow of glucose through the pathway by committing glucose to be broken down into pyruvate. This regulation ensures that glycolysis proceeds efficiently and that the cell can generate energy effectively.