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Bacteria and Viruses

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4.a living thing that a virus or parasite lives on or in
5.an organism that consists of a single cell that does not have a nucleus
6.the biological treatment of hazardous waste by living organisms
8.reproduction in which one single-celled organism splits into two single-celled organisms
1.contains genetic material and proteins and is covered by a thick, protective coat
2.bacteria that cause disease
3.medicine used to kill bacteria and other microorganisms
7.a microscopic particle that gets inside a cell and often destroys it

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