... in order to produce fructose bisphosphate, using ATP, again for the same reason as above. At this stage, all the molecules produced are still 6 carbon molecules. Once the fructose bisphosphate has been produced, it then reacts and splits into two separate molecules of glycerate-3-phosphate, which is a 3 carbon, chained molecule. For the final stage of the process of glycolysis the molecule glycerate-3-phosphate is oxidised by a coenzyme, NAD. The glycerate-3-phosphate loses a hydrogen atom, which is transferred on the NAD molecules to turn the molecule into reduced NAD (NAD H+). This last stage also produces 2 ATP molecules on each glycerate-3-phosphate molecule by converting the earlier productions of ADP + Pi back into ATP. So in glycolysis we are left with 2 molecules of reduced NAD and ATP with a final product of pyruvates. In the second stage of aeorobic respiration (link reaction) the two molecules or three ...

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