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Viruses & Bacteria

Virus & Bacteria vocabulary

host cell living cell in which a virus can actively multiply or in which a virus can hide until activated by environmental stimuli
virus a strand of hereditary material surrounded by a protein coating
aerobe any organism that uses oxygen for respiration
anaerobe any organism that is able to live without oxygen
antibiotic chemicals produced by some bacteria that are used to limit the growth of other bacteria
endospore thick-walled, protective structure produced by some bacteria when conditions are unfavorable for survival
fission simplest form of asexual reproduction in which two new cells are produed with genetic material identical to each other and identical to the previous cell
flagella/flagellum long, thin whiplike structure that helps organisms move through moist or wet surroundings
nitrogen-fixing bacteria bacteria that convert nitrogen in the air into forms that can be used by plants and animals
pathogen disease-producing organism
saprophyte organism that uses dead organisms as a food source and helps recycle nutrients so they are available for use by other organisms
toxin poisonous substance produced by some pathogens
vaccine preparation made from killed bacteria or damaged particles from bacterial cell walls or viruses that can prevent some bacterial and viral diseases
Created by: mrskrause