Practice question

Carbon monoxide is described as a 'chemical asphyxiant' because it:

  1. Simply displaces oxygen like nitrogen
  2. Binds to hemoglobin far more strongly than oxygen, preventing oxygen transport in the blood
  3. Has no effect on the body
  4. Only irritates the eyes

Answer: B — Binds to hemoglobin far more strongly than oxygen, preventing oxygen transport in the blood

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