Why Is a Person Who Has Already Had Chickenpox Considered

question 8

Multiple Choice

Why is a person who has already had chickenpox considered to be "immune" to developing the disease again even if he or she is heavily reexposed to the virus again?

• A) On reexposure to the came virus,his or her sensitized B lymphocytes generate large amounts of antichickenpox antibodies.
• B) This person's neutrophils and macrophages are able to recognize the virus sooner and make antibodies against it.
• C) Once a person has had chickenpox,the virus can never enter his or her body again.
• D) He or she has developed naturally acquired passive immunity to the virus.

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Definitions:

Gametophyte

The haploid stage in the life cycle of plants and algae that produces gametes through mitosis, leading to sexual reproduction.

Liverworts

A group of non-vascular plants belonging to the phylum Marchantiophyta, often found in moist, shaded environments.

Club Mosses

Ancient plants belonging to the division Lycopodiophyta, characterized by their club-shaped reproductive structures and resemblance to mosses.

Club Mosses

Prehistoric plants from the Lycopodiophyta division, identified by their club-like reproductive organs and similarity to mosses.