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HMS, BM EQ-Bank 769 MC

Which energy system produces the MOST ATP molecules per molecule of glucose?

  1. ATP-PCr system
  2. Glycolytic (lactic acid) system
  3. Aerobic energy system
  4. None of these systems produce ATP from glucose
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\(C\)

Show Worked Solution
  • C is correct: The aerobic system produces 36-38 ATP molecules per molecule of glucose through complete oxidation with oxygen, making it the most efficient system.

Other Options:

  • A is incorrect: The ATP-PCr system doesn’t directly use glucose as a fuel source; it uses phosphocreatine to regenerate ATP.
  • B is incorrect: The glycolytic (lactic acid) system produces only about 2 ATP molecules per glucose molecule through anaerobic glycolysis.
  • D is incorrect: Both the glycolytic and aerobic systems produce ATP from glucose, with different levels of efficiency.