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Glycolysis is the first step in cellular respiration and all cells
regardless of the type of cellular respiration they do are able to carry out glycolysis. Because of this we believe that glycolysis
probably arose very early in the evolution of life on the planet. In glycolysis glucose is partially oxidized and broken down
into two 3 carbon molecules called pyruvate or pyruvic acid. In the process, glycolysis produced 4 ATP for a net gain of two ATP and two molecules
of NADH. Each NADH is carrying two energy rich electrons away from the glucose and these electrons can be used
by the cell to do work. cellular respiration is a key part of our lives as humans because our cells carry out cellular respiration.
therefore we depend on this energy transfer to give us energy.
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