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An organism that consists of a single cell that does not have a nucleus

binary fusion

A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size


A thick-walled protective spore that forms inside a bacterial cell and resists harsh conditions


The biological remediation of hazardous waste by living organsims


medicine used to kill bacteria and other microorganisms

pathogenic bacteria

Bacteria that causes diseases


A microscopic particle that gets inside a cell and often destroys the cell


An organism from which a parasite takes food and shelter

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