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15 terms

bacteria, viruses, and immunity

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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