Answer :
Final answer:
The correct option for artificially acquired passive immunity is when a person is injected with antibodies made by another person or animal. This method provides temporary protection without the development of long-term immunity. It contrasts with natural immunity, where exposure to an antigen leads to an immune response and memory cell creation.
Explanation:
Understanding Artificially Acquired Passive Immunity
Artificially acquired passive immunity occurs when a person is injected with antibodies that are made by another person or animal. This method is used in situations where an individual is at high risk for infection and there is not enough time for the immune system to develop its own antibodies through vaccination.
For example, if someone is exposed to hepatitis A, they might receive an injection of human immune globulin, which contains antibodies against the virus. Unlike active immunity, which develops through exposure to pathogens and the body's own immune response, passive immunity provides immediate but temporary protection since the antibodies last only for a short duration, usually a few days to a few months.
It's important to note that this type of immunity does not trigger the body to create memory cells that would provide long-term immunity, a characteristic of active immunity where one’s own immune system produces antibodies and creates immunological memory.
Summary of Options for the Multiple-Choice Question
- It occurs when a person is injected with antibodies made by another person or animal. (Correct)
- Immunity is developed through natural exposure to an antigen. (Incorrect)
- A person receives this type of immunity from his or her mother. (Incorrect)
- It occurs when a person is injected with a pathogen and then makes his or her own antibodies. (Incorrect)
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