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What is the effect of carbon monoxide (CO) on the human body?

Options

  1. AIt increases the oxygen-carrying capacity of blood.
  2. BIt has no impact on the human body.
  3. CIt binds to hemoglobin, reducing the oxygen-carrying capacity of blood.
  4. DIt stimulates the immune system.

Correct answer

C. It binds to hemoglobin, reducing the oxygen-carrying capacity of blood.

Step-by-step solution

Carbon monoxide (CO) binds to hemoglobin in the blood, forming carboxyhemoglobin, which reduces the blood's capacity to carry oxygen. This can lead to symptoms such as headache, weakness, and cardiovascular issues.

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