Every winter, many individuals tragically die in their sleep due to faulty heaters that leak carbon monoxide (CO) during the night. How does CO poisoning lead to death?
A. CO binds to oxygen, and the CO-oxygen complex cannot bind to hemoglobin.
B. CO coats the surfaces of the alveoli, preventing diffusion of oxygen into the blood.
C. CO binds more tightly to hemoglobin than does oxygen.
D. CO inhibits the chemosensitive neurons in the aortic and carotid bodies.
E. CO binds more tightly to carbonic anhydrase than does carbon dioxide.
Answer: C
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B cells interact directly with
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