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Physical and Chemical Agents

Physical and Chemical Agents
The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as

antisepsis
pasteurization
sterilization
disinfection

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Physical and Chemical Agents
Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?

Aldehydes
Ethylene oxide
Halogens
None of these

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Physical and Chemical Agents
The time required to kill 90% of the microorganisms in a sample at a specific temperature is the

D value
F value
decimal reduction time
thermal death point

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Physical and Chemical Agents
Bactericidal concentration of phenol is

0.75%
1%
0.25%
0.5%

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Physical and Chemical Agents
A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.

disinfectant
sanitizer
antiseptic
bacteriostatic agent

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Physical and Chemical Agents
One drawback to the use of ultraviolet light as a sterilizing agent is its

failure to kill microbes in a closed environment
failure to kill bacteria
failure to kill microbes located in the center of an object
failure to bacterial spores

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