Exam 8: Control of Microorganisms in the Environment

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.

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

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

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

If one left a "Pasteurized" flask of broth for a long time at room temperature, it would stay sterile forever, at least in principle.

Which of the following is MOST effective against resistant endospores?

When antiseptics and disinfectants are compared, antiseptics are generally

Pasteurization is used to

Which will require a longer time to kill?

Moist heat sterilization at 100 $\degree$ C kills all of the following except

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

Moist heat sterilizes by

The prevention of infection caused by microorganisms is called

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

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

Which of the following is not a method of heat sterilization?