Why Is the Study of Mice Injected with Morphine Useful

question 35

Multiple Choice

Why is the study of mice injected with morphine useful to humans?

• A) Mice cannot overdose on morphine.
• B) Mice display tolerance to morphine, just as addicts develop tolerance to heroin (a derivative of morphine).
• C) Mice do not show effects of context in their tolerance to morphine.
• D) The study of mice cannot be related to human drug addicts.

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Definitions:

Supernatant

The liquid portion of a substance from which solids have settled to the bottom, as with a urine specimen after centrifugation.

Urine

A liquid by-product of metabolism in humans and many animals, expelled from the body.

Centrifuge

A machine that uses centrifugal force to separate particles or substances of different densities within a liquid.

Protozoal Infection

A type of infection caused by protozoa, single-celled organisms that can either be free-living or parasitic.