Chronic toxicity is characterized by which?

Chronic toxicity is characterized by which?

• A. Acute toxicity
• B. Short-term exposure effects
• C. Long-term exposure effects
• D. LD50

Answer: (C)

Chronic toxicity refers to adverse health effects that appear after long-term exposure to a substance, usually at low or repeated doses over months or years, reflecting cumulative or delayed damage to tissues and organs. This long-term pattern is what signals potential risks from sustained exposure, such as gradual organ dysfunction or cancer development. The other terms describe different scenarios: acute toxicity involves immediate or short-term effects from a single or brief high-dose exposure, and LD50 is a specific measure used to quantify that acute toxicity by identifying the dose that kills 50% of test subjects.

Chronic toxicity refers to adverse health effects that appear after long-term exposure to a substance, usually at low or repeated doses over months or years, reflecting cumulative or delayed damage to tissues and organs. This long-term pattern is what signals potential risks from sustained exposure, such as gradual organ dysfunction or cancer development. The other terms describe different scenarios: acute toxicity involves immediate or short-term effects from a single or brief high-dose exposure, and LD50 is a specific measure used to quantify that acute toxicity by identifying the dose that kills 50% of test subjects.