Exam 11: Physical and Chemical Control of Microbes

_____ solution was introduced in the late 19th century for preventing gonococcal infections in a newborn's eyes after exposure to the mother's infected birth canal.

Which of the following is not true of glutaraldehyde?

Which of the following is not a factor that affects germicidal activity?

Vials of microorganisms that undergo the freeze-drying process,called _____,will remain preserved and viable for years.

Bacteriostatic agents kill bacterial cells.

When a control agent targets the metabolic processes of microbial cells,active younger cells typically die more rapidly than older cells.

Chlorine compounds remain stable and effective in the presence of excess organic matter.

Heavy metals work by

Surfactants work by

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is ______.

Physical agents for controlling microbial growth include all of the following except ______.

Iodophors include ______.

Disinfection of beverages such as apple juice,milk,and wine is optimally achieved by ______.

Placing organisms at 4^oC is ______.

Cold temperatures are considered microbistatic,whereas excessive heat is considered microbicidal.This is due to the fact that irreparable damage.

The use of filtration for sterilization

Which of the following is not a heavy metal?

The removal of all life forms from inanimate objects is termed ______.

Electrons are ejected from atoms in cells when organisms are exposed to ______.

Isopropyl alcohol wiped across a skin site can sterilize it.