Which statement best describes acute toxicity?

Which statement best describes acute toxicity?

• A. It concerns harm from a single exposure that can cause death or injury.
• B. It concerns harm from long-term exposure with cumulative effects.
• C. It concerns non-lethal skin irritation only.
• D. It concerns ecological effects from environmental exposure.

Answer: (A)

Acute toxicity focuses on the harmful health effects that occur soon after a single, short-term exposure to a chemical. It emphasizes rapid onset and the potential for death or serious injury right after that exposure. This differs from chronic toxicity, which involves harm from repeated or long-term exposure that can accumulate in the body over time. The description about non-lethal skin irritation is too narrow, and ecological effects refer to environmental impacts rather than immediate human health effects from a single exposure. So the best description is harm from a single exposure that can cause death or injury.

Acute toxicity focuses on the harmful health effects that occur soon after a single, short-term exposure to a chemical. It emphasizes rapid onset and the potential for death or serious injury right after that exposure. This differs from chronic toxicity, which involves harm from repeated or long-term exposure that can accumulate in the body over time. The description about non-lethal skin irritation is too narrow, and ecological effects refer to environmental impacts rather than immediate human health effects from a single exposure. So the best description is harm from a single exposure that can cause death or injury.