An LD50 is a dose of a toxic chemical that
A) is an acceptable level of risk for most individuals.
B) all individuals react to.
C) kills individuals 50 years old and over.
D) is 50 times less than the minimal dose.
E) kills half of the population.

Question

Quizplus · Accepted Answer

An LD50 is the dose of a toxic chemical that kills 50% of the population or test animals that are exposed to it. It is a measure of toxicity and is used to determine the level of risk posed by a particular substance. Therefore, the correct choice is E which says it kills half of the population.

An LD50 Is a Dose of a Toxic Chemical That