________ binds to hemoglobin even more strongly than oxygen does.
Concept introduction: Carbon monoxide (CO) is a colorless, odorless gas that is released when the organic material burns. Carbon monoxide poisoning is the most common type of fatal inhalation poisoning in the United States and worldwide. When CO is present in the body, the blood holds more less oxygen and releases of little of what it does hold to tissues.
Reasons for correct answer:
The inhaled carbon monoxide exerts its adverse effect by interfering with gas exchange. Carbon monoxide binds to hemoglobin to form carboxyhemoglobin. Hemoglobin has very high affinity for CO. It will bind to hemoglobin 200 times more tightly than oxygen. CO blocks many oxygen-binding sites and also causes the hemoglobin to hold on to any oxygen that it binds.
Option c. is given as āCarbon monoxideā. As CO binds to hemoglobin more strongly than oxygen does, option b. is correct.
Reasons for incorrect answer:
Option a. is given as āCarbon dioxideā...
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