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21. The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as
A. pasteurization
B. antisepsis
C. disinfection
D. sterilization
22. Media containing spores and thermolabile constituents are sterilized by
A. pasteurization
B. UV radiation
C. dry heat
D. tyndallization
23. A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
A. bacteriostatic agent
B. sanitizer
C. disinfectant
D. antiseptic
24. One drawback to the use of ultraviolet light as a sterilizing agent is its
A. failure to kill bacteria
B. failure to bacterial spores
C. failure to kill microbes in a closed environment
D. failure to kill microbes located in the center of an object
25. Ethylene oxide is used to destroy or kill which of the following microbes?
A. Bacteria
B. Spores
C. Fungi
D. All of these
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