Physical and Chemical Agents – Section 1


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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

Correct Answer: D. sterilization
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22. Media containing spores and thermolabile constituents are sterilized by

A. pasteurization
B. UV radiation
C. dry heat
D. tyndallization

Correct Answer: B. UV radiation
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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

Correct Answer: D. antiseptic
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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

Correct Answer: D. failure to kill microbes located in the center of an object
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25. Ethylene oxide is used to destroy or kill which of the following microbes?

A. Bacteria
B. Spores
C. Fungi
D. All of these

Correct Answer: D. All of these
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