Physical and Chemical Agents
Which of the following methods will not sterilize?

Dry heat at 171°C for 1 to 2 hours
100°C boiling water for 30 minutes
121°C at 15 lb/in pressure for 15 to 20 minutes
Aqueous glutaraldehyde for 10 hours

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Physical and Chemical Agents
Which of the following describes the effect of ionizing radiation on microbes?

Substantially decreases enzymatic activity, slowing microbial reproduction
Induces electrons and protons to jump out of the molecules of the microbe
Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
None of these

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