1. glycolysis

• glycolysis

  • in cell cytoplasm
  • doesnt require oxygen-first step of aerobic and anaerobic respiration
  • glucose is partially oxidised
• first step

  phosphorylation of glucose

  • 2 ATP molecules used to provide 2 phosphates(PI) needed for the phosphorylation of glucose(6C)(ATP-ADP+PI)
  • this hydrolysis of ATP provides energy for glucose to be broken down
  • products= 2 triose phosphates(2x3C) and 2 ADP molecules
• second step


  oxidation of triose phosphate

  • triose phosphates lose hydrogen(oxidised)- NAD collects 2 H+ ions for 2 NADH= 2 pyruvate molecules
  • 4 ADP= 4 ATP molcules produced
• products of glycolysis

  • 2 x pyruvate(3c) molecules
  • 2 NADH
  • 2 ATP molecules(2 used and 4 produced)