Colorado Qualified Supervisor (QS) And Certified Operator (CO) Pesticide Practice Test

What is acute toxicity?

A result of an accidental or intentional single or repeated short-term exposure to a substantial dose of toxicant. A result of prolonged exposure to low doses. The cumulative damage that occurs over months. The ability to act quickly after contact with water.

Correct Answer:

A result of an accidental or intentional single or repeated short-term exposure to a substantial dose of toxicant.

Explanation:

Acute toxicity is the harmful effect that happens quickly after a high-level exposure to a toxicant, such as a single accidental ingestion or a brief but substantial exposure. The emphasis is on the short time frame and the large dose that produces immediate health effects. This differs from chronic toxicity, which arises from long-term exposure to low doses that accumulate over time. The other descriptions point to chronic exposure or unrelated properties rather than the rapid response after a high-dose exposure.

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