bacteria, viruses, and immunity

15 terms by bassetguy

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bacteria

extremely small unicellular organisms without a nucleus; prokaryotic cells

antibiotic

medicine that kills or slows the growth of bacteria

pathogen

any disease-producing agent (especially a virus or bacterium or other microorganism)

antigen

substance that, when introduced into the body, causes formation of antibodies against it

antibody

a substance produced by the body that destroys or inactivates an antigen that has entered the body

virus

A strand of nucleic acid encased in a protein coat that can infect cells and replicate within them

vector

an organism, such as an insect, that transmits pathogens

A.I.D.S.

acquired immunodeficiency syndrome

protist

a eukaryotic organism that cannot be classified as an animal, plant, or fungus

vaccine

solution made from dead viruses that is use to prevent viral disease

immunity

Resistance to disease

T-cell

lymphocytes that develop in the thymus and are responsible for immunity

B cell

a white blood cell that matures in bones and makes antibodies

allergic response

when the immune system overreacts to an otherwise harmless substance

antibiotic resistance

when some bacteria are able to survive in the presence of an antibiotic

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