Exam 8: Control of Microorganisms in the Environment

The rate of killing by an antimicrobial agent may slow when the microbial population has been greatly reduced because the remaining population may have a high proportion of resistant organisms.

Which of the following inhibits bacterial growth but does not kill bacteria

Which of the following is MOST effective against resistant endospores?

The disinfectant screening method that is known as the ________ _________ test,which is used to measure the potency of a disinfectant.

Which of these is an agent that is used to sterilize the plastic tubing of heart-lung machines?

The higher the phenol coefficient value,the _______ effective the disinfectant under the test conditions.

Which of the following is (are)a sterilizing gas(es)that can be used on heat-sensitive materials?

Which of the following is a function of pasteurization?

The first product to be commercially treated by pasteurization was

The disinfectant action of phenol and phenolic derivatives mainly is due to

Betapropiolactone is not as useful as ethylene oxide as a sterilizing agent because it does not penetrate materials as readily as ethylene oxide.

An agent that kills bacteria is referred to as __________.

Joseph Lister

Dry heat methods usually require lower temperatures and shorter exposure times than moist heat methods to achieve the same degree of killing because of the drying effects of this form of heat.

Which of the following influence(s)the efficiency of an antimicrobial agent?

An agent that specifically kills fungi but not other kinds of microorganisms is also known as a