Exam 8: Control of Microorganisms in the Environment

The disinfectant of choice for municipal water supplies is __________.

Several new materials have been developed for use in the microbiology lab.These materials must be sterilized before use,but cannot withstand a temperature over 60^oC and can't be exposed to water.Which method of sterilization would be applicable?

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

Which of the following environmental factors generally do(es)not have an impact on the efficiency of an antimicrobial agent?

The use of bacteriophage to treat human infections is referred to as phage ___________.

The two most important alcohol germicides are __________ and __________.

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

Antiseptics are generally regulated by the

The prevention of infection caused by microorganisms is called

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

Which of the following represents the best definition for microbial death?

When comparing dry heat and moist heat sterilization,dry heat is

Heavy metals may inactivate proteins by reacting with their sulfhydryl groups.

Which of the following is a Gram-negative bacterium that acts as a predator on other Gram-negative bacteria,and might be used to control populations of Gram-negative human pathogens in locations such as poultry farms?

Ultraviolet radiation is an effective means of sterilizing surfaces.

Microorganisms show differential sensitivity to antimicrobial agents.

Bacteriophage therapy was developed after antibiotics were first discovered and used for treating bacterial infections.

Which kind of sterilization procedure takes advantage of the size of microorganisms?

The first product to be commercially treated by pasteurization was

A(n)__________ is a chemical that can be used to sterilize materials.