Glycolysis

• Glycolysis occurs in the cytoplasm of cells 
• 1. Initially the glucose, a 6-carbon molecule, is inactive and is activated by phosphorylation 
• 2. The phosphorylated glucose (6C) is then 

  converted into fructose biphosphate (6C)
• 3. Fructose biphosphate splits into two molecules 

  of 3C triose phosphate
• 4. The triose phosphate is then oxidised through the loss of two hydrogen atoms and pyruvate (3C) is formed
• 5. Two molecules of ATP are produced in the conversion of triose phosphate to pyruvate, as there are two triose phosphates there is a total of 4ATP produced at this stage.
• 6. there is a net gain of 2 ATP (2 ATP were used to activate the glucose) 
• 7. The hydrogen atoms are taken up by NAD and transferred to the Electron Transport Chain
• 8. The 2 pyruvate are transported to the link reaction