What odorless, colorless gas binds preferentially with the same binding site on hemoglobin as oxygen?
A) hydrogen sulfide
B) carbon monoxide
C) nitrous oxide
D) methane

Question

Quizplus · Accepted Answer

Carbon monoxide binds to the same binding site on hemoglobin as oxygen and has a higher affinity, which can lead to carbon monoxide poisoning. Hydrogen sulfide also binds to hemoglobin but at a different site, while nitrous oxide and methane do not bind to hemoglobin at all.

What Odorless, Colorless Gas Binds Preferentially with the Same Binding