- ATP molecule is hydrolysed. The phosphate group that's released is attached to the glucose molecule at carbon 6.
- Glucose 6 phosphate is changed to fructose 6-phosphate.
- More ATP is hydrolysed. The phosphate group that's released is attached to the fructose 6-phosphate at carbon 1.
- Hexose sugar is activated, > fructose 1,6-bisphosphate.
- Energy from the hydrolysed ATP molecules activates the hexose sugar.
- This stage used 2 molecules of ATP for each glucose molecule.
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Splitting of hexose 1,6-bisphosphate
- Each molecule is split into 2 molecules of triose phosphate (3-carbon sugar molecules each with one phosphate group attached.)
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Oxidation of triose phosphate
- 2 hydrogen atoms are removed from each triose phosphate molecule.
- NAD combines with the hydrogen atoms to form rNAD.
- 2 molecules of NAD are reduced per glucose molecule.
- 2 molecules of ATP are formed.
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Conversion of triose phosphate to pyruvate
- 4 enzyme-catalysed reactions convert each triose phosphate molecule to a molecule of pyruvate.
- Pyruvate is a 3-carbon compound.
- 2 molecules of ADP are phosphorylated to 2 molecules of ATP.
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