Occupational and Environmental Health: Recognizing and Preventing Disease and Injury - Multiple Choice Questions - Learn & Prevent

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Prepare for the Occupational and Environmental Health exam with our multiple-choice questions designed to help you recognize and prevent disease and injury. Study effectively and gain confidence for your upcoming test!

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What is a primary function of cytochrome P-450 enzymes?

  1. To enable muscular contraction

  2. To transport oxygen in the bloodstream

  3. To metabolize toxic substances

  4. To synthesize DNA

The correct answer is: To metabolize toxic substances

Cytochrome P-450 enzymes are responsible for metabolizing (breaking down) toxic substances in our body. They are found in high amounts in the liver, but also in other tissues. Option A is incorrect because muscular contraction is not a function of these enzymes. Option B is incorrect because transporting oxygen is the responsibility of other proteins in the bloodstream, like hemoglobin. Option D is incorrect because synthesizing DNA is a function of other enzymes, like DNA polymerases.

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