Infectious Agents Review

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What is a vaccine?

Back

A substance prepared from dead or weakened pathogens that is introduced into the body to stimulate immunity.

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What is a parasite?

Back

An organism that lives on and feeds on another organism, called a host.

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What is a pathogen?

Back

Any agent that causes disease, including bacteria, viruses, and fungi.

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What is Covid-19?

Back

An example of a virus that causes respiratory illness.

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What are bacteria?

Back

Single-celled microorganisms that can be beneficial or harmful to humans.

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What are fungi?

Back

A group of organisms that includes yeasts and molds, some of which can cause disease.

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What is immunity?

Back

The ability of the body to resist or fight off infection.

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What is a host?

Back

An organism that provides a suitable environment for a parasite to live and feed.

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What is the role of viruses?

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Viruses invade host cells and replicate, often causing disease.

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What is an example of a bacterial infection?

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Strep throat, which is caused by Streptococcus bacteria.