Exam 9: Physical and Chemical Control of Microbes

When comparing the Bunsen burner and a hot-air oven,the Bunsen burner is more versatile since it can sterilize a wide range of materials,including plastics,cottons and oils.

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

The method of removing vegetative microbial life forms from inanimate objects is termed ________.

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Which of the following acids is not used to destroy or inhibit microbial cells in food?

Chlorhexidine kills microbes by ________.

________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

The easiest microbial forms to kill or inhibit are ________.

Which of the following forms of radiation is in order from the most penetrating to the least penetrating?

________ heat is more rapidly effective and efficient compared to ________ heat.

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following microbes are targeted by alcohol-based hand cleaners?  

The most efficient sterilizing conditions in a steam autoclave are ________.

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -Which of the following scenarios are most appropriate for handwashing with an alcohol-based hand cleanser instead of soap and water?  

Prions require more extensive methods of sterilization than are needed for bacterial endospores.

Which of the following microbial forms have the highest resistance to physical and chemical controls?

A cleansing method that mechanically removes microbes and other debris to reduce contamination is ________.

Agents that can denature microbial proteins include all of the following except ________.

Hydrogen peroxide can be ________.

An RN in a long-term care facility oversees the care of 15 patients. He observes precautions to control and prevent the spread of infection. -The RN utilizes an alcohol-based hand cleanser with friction rub when his hands are not visibly dirty.Which of the following terms appropriately describes the type of antimicrobial control provided by alcohol-based hand cleansers?  

Which of the following items are typically irradiated in order to kill microbes?