GED Science Practice

What is the meaning of the term "quarantine"?

1. Isolation to prevent the spread of infectious disease

2. A bitter alkaloid extracted from chinchona bark

3. An acute viral disease of the nervous system of warm-blooded animals

4. The treatment of disease by exposure to radiation from a radioactive substance

The correct answer is: Isolation to prevent the spread of infectious disease

The term "quarantine" specifically refers to the practice of isolating individuals or groups who may have been exposed to an infectious disease, with the intent of preventing its spread to others. This isolation can help control outbreaks by ensuring that those who might be carriers or who show symptoms are kept away from healthy people until it is confirmed they are not infectious. The other options refer to different concepts. The bitter alkaloid extracted from chinchona bark is known as quinine, which is unrelated to the concept of isolation for disease prevention. The acute viral disease of the nervous system pertains to rabies or similar conditions, and treatment involving radiation typically relates to cancer therapy rather than infectious disease control. Thus, the definition of "quarantine" aligns specifically with the first option, making it the correct answer.