Energy yields of respiration (AQA)

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  • Energy yields from respiration
    • Substrate-level phosphorylation
      • Glycolysis and Krebs
      • Direct linking of Pi to ADP to produce ATP
    • Oxidative phosphorylation
      • Electron transport chain
      • Indirect linking of Pi to ADP to produce ATP
      • Uses hydrogen atoms from glycolysis and Krebs
        • Carried by NAD and FAD
      • Cells produce most of their ATP this way
    • Only glycolysis can occur in aerobic respiration
      • Pyruvate is converted to lactate or ethanol
      • No pyruvate available for Krebs or ETC.
      • Much greater yield of ATP from aerobic than from anaerobic

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