Multiple choice

When man inhales air containing normal concentration of oxygen mixed with carbon monoxide, he feels suffocated because __________.

  1. carbon monoxide reacts with oxygen reducing percentage of oxygen in the air

  2. hemoglobin combines with carbon monoxide and the product cannot dissociate

  3. carbon monoxide affects the nerves of the lungs

  4. carbon monoxide affects the movement of diaphragm

  5. carbon monoxide affects the intercostal muscles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In comparison to oxygen ,carbon monoxide combines more readily with hemoglobin (about 250 times more) and thus person suffers from suffocation due to lack of oxygen.

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