Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism.
First Half of Glycolysis (Energy-Requiring Steps)
In the first half of glycolysis, energy in the form of two ATP molecules is required to transform glucose into two three-carbon molecules.
Second Half of Glycolysis (Energy-Releasing Steps)
In the second half of glycolysis, energy is released in the form of 4 ATP molecules and 2 NADH molecules.
Outcomes of Glycolysis
One glucose molecule produces four ATP, two NADH, and two pyruvate molecules during glycolysis.