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HESI A2 Exam Prep 2026

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About Oxidation-Reduction (Redox) Reactions

Carbon monoxide (CO) acts as an oxidizing agent by binding to hemoglobin's iron, disrupting oxygen transport and causing functional hypoxia.

Related Topics

Atomic StructurePeriodic Table & Periodic TrendsChemical Bonds (Ionic, Covalent, Metallic)Chemical Reactions & Balancing EquationsStoichiometry & Mole Concept
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Oxidation-Reduction (Redox) Reactions HESI A2 Practice Questions

Free Oxidation-Reduction (Redox) Reactions practice questions for the HESI A2 exam with detailed rationales.

Question 2 of 2

A patient is exposed to carbon monoxide (CO), which inhibits oxygen transport by binding to hemoglobin. Which of the following best describes CO in a redox reaction with hemoglobin?

B. CO acts as an oxidizing agent
C. CO donates electrons to hemoglobin
D. CO accepts electrons and is reduced
A. CO is oxidized by hemoglobin

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