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Bacteria, Viruses, and the Immune System

Name____________________________________
Date____________Per.__________Row________
Life Science Textbook   Chapter 6 pages 172-197
Across
A disease caused by a virus that attacks the immune system
The organism that benefits by living on or in a host in a parasitism interaction
Single-celled organisms that lack a nucleus
Part of the body's defense against pathogens, in which cells of the immune system react to each kind of pathogen with a defense targeted specifically at that pathogen.
A disease caused by the presence of a living thing in the body
A chemical that is responsible for the symptoms of an allergy
Part of the body's defense against pathogens, in which fluid and white blood cells leak from blood vessels into tissues, and white blood cells destroy pathogens
The virus that causes AIDS
A tiny, nonliving particle that invades and then reproduces inside a living cell
A virus that infects bacteria
White blood cell that distinguishes between each kind of pathogen
A lymphocyte that identifies pathogens and distinguishes one pathogen from another.
A protein produced by a B cell of the immune system that destroys pathogens.
The body's ability to destroy pathogens before they can cause disease.
Down
A substance used in a vaccination that consists of weakened or killed pathogens that can trigger the immune system into action
A molecule that the immune system recognizes either as part of the body or as coming from outside the body.
Immunity in which antibodies are given to a person rather than produced within the person's own body.
A disease that is not caused by a pathogen
An organism that causes disease
A white blood cell that destroys pathogens by engulfing them and breaking them down
Immunity that occurs when a person's own immune system produces antibodies in response to the presence of a pathogen.
The process by which harmless antigens are deliberately introduced into a person's body to produce active immunity.
A lymphocyte that products proteins that destroy pathogens.
A poison produced by bacterial pathogens that damages cells
The organism that a parasite or virus lives in or on