Glycolysis (AQA)

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  • Glycolysis
    • General info
      • 1st stage of aerobic and anaerobic repiration
      • Happens in the cytoplasm
        • Does not require any organelle or membrane
      • 6-Carbon sugar is split into 3-Carbon Pyruvate
      • Net gain
        • 2 ATP
          • 4 made, 2 used
        • 2 reduced NAD
        • 2 Pyruvate
      • Anaerobic
        • Takes place with  or without oxygen
    • Stage 1
      • Phosphorylation
        • Glucose is made more reactive
          • Activated
          • Lowers the activation energy for the other reactions
        • Addition of two phosphate molecules
          • From the hydrolysis of 2 ATP molecules to ADP.
    • Stage 2
      • Splitting of the phosphorylated glucose
        • 6-Carbon glucose is split into two triose phosphates
          • These are 3-Carbon molecules
    • Stage 3
      • Triose phosphate is oxidised
        • Hydrogen is removed
          • Transferred to coenzyme NAD
          • Forms reduced NAD
    • Stage 4
      • Enzyme controlled reactions
      • Triose phosphate converted to pyruvate
      • 2 molecules of ATP produced for each triose phosphate

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