Chemistry • Chemistry Topics

Oxidation-Reduction (Redox) Reactions

Master Oxidation-Reduction (Redox) Reactions concepts with free HESI A2 practice questions and detailed rationales. These questions will help you reinforce your understanding and improve your score on the HESI A2 exam.

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Topic guide

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This Oxidation-Reduction (Redox) Reactions page is part of the Chemistrysection under Chemistry Topics. Use the free questions below to check your understanding, read the rationale after each answer, and then move into a full HESI A2 question bank session.

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Free Practice Questions (2)

Question 1easy

Role of NAD⁺ in Redox Reactions

During a redox reaction in a biological system, NAD⁺ is converted to NADH. What role does NAD⁺ play in this reaction?

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Question 2easy

Carbon Monoxide as an Oxidizing Agent in Hemoglobin Binding

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?