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HMS, BM EQ-Bank 157

Compare the efficiency of ATP production between the glycolytic and aerobic systems.   (5 marks)

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Sample Answer

  • The glycolytic system rapidly produces 2-3 ATP molecules through anaerobic glucose breakdown, supporting high-intensity activities lasting 10-60 seconds.
  • The aerobic system yields 36-38 ATP molecules per glucose molecule through complete oxidation, but occurs at a slower rate for sustained activities.
  • Glycolytic efficiency is limited by lactic acid accumulation causing fatigue and restricting continuous high-intensity performance.
  • The aerobic system produces CO2 and H2O as by-products, allowing sustained energy production without causing fatigue.
  • While more efficient in ATP yield, the aerobic system requires constant oxygen availability and can only support submaximal exercise intensities.
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Sample Answer

  • The glycolytic system rapidly produces 2-3 ATP molecules through anaerobic glucose breakdown, supporting high-intensity activities lasting 10-60 seconds.
  • The aerobic system yields 36-38 ATP molecules per glucose molecule through complete oxidation, but occurs at a slower rate for sustained activities.
  • Glycolytic efficiency is limited by lactic acid accumulation causing fatigue and restricting continuous high-intensity performance.
  • The aerobic system produces CO2 and H2O as by-products, allowing sustained energy production without causing fatigue.
  • While more efficient in ATP yield, the aerobic system requires constant oxygen availability and can only support submaximal exercise intensities.