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

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Test your knowledge on preventing occupational and environmental diseases with our quiz app. Dive into insightful questions based on the 6th edition of the renowned book Occupational and Environmental Health: Recognizing and Preventing Disease and Injury by Levy et al., ISBN 978-0-19-539788-8. A perfect tool for health professionals and students.

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What does the term 'biological half-life' refer to?

The lifespan of a living organism
The time it takes for a living organism to mature
The time it takes for half of a chemical dose to be eliminated from the body
The period during which a chemical remains active in the environment

The correct answer is: The time it takes for half of a chemical dose to be eliminated from the body

The term 'biological half-life' refers to the amount of time it takes for half of a chemical dose to be eliminated from the body. This concept is related to the process of metabolism and elimination of substances from the body. The other options are incorrect because they do not accurately reflect the meaning of biological half-life. Option A, the lifespan of a living organism, is too broad and does not specifically pertain to the elimination of chemicals. Option B, the time it takes for a living organism to mature, is also inaccurate as it does not involve the body's processing of chemicals. Option D, the period during which a chemical remains active in the environment, is closer in meaning to the half-life of a chemical in the environment, not the biological half-life. Therefore, option C is the correct answer.