Which term describes the degree to which a substance can harm organisms?

• A. Adverse Reactions
• B. Toxicity
• C. Dosage Ranges
• D. Clinical Pharmacologist

Answer: (B)

Toxicity describes the degree to which a substance can harm organisms. It is the inherent potential of a chemical or drug to cause harm, influenced by factors like dose, route of exposure, duration, and the organism’s characteristics. Adverse reactions are specific harmful effects that may occur in individuals at certain doses, not the overall harm potential of the substance. Dosage ranges describe how much of the substance is used or tolerated, which can influence whether toxicity is reached, but they don’t define the substance’s capacity to cause harm. A clinical pharmacologist is a professional who studies drug actions, not a measure of harm. So the term that best fits is toxicity.