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  • Which of these substances affects the oxygen carrying cap...
Multiple choice

Which of these substances affects the oxygen carrying capacity of blood?

  1. CO2

  2. CO

  3. SO2

  4. NO2

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon monoxide (CO) binds to hemoglobin in the blood much more strongly than oxygen, preventing the blood from carrying oxygen effectively.

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