Bio204 MH Ch 11

The microbe with the most resistance to antimicrobial methods are

• Naked viruses

• Fungal spores

• Bacterial Endospores

• Protozoan cysts

• Prions

Destroys most microbial life on animate surfaces

• Sterilization

• Disinfection

• Antisepsis

• Decontamination

The use of a filter to remove microbes is called

• sterilization

• disinfection

• antisepsis

• decontamination

Select all that are chemical forms of microbial control

• Alcohol

• UV light

• Pasteurization

• Bleach

• Silver

UV light causes electrons to be ejected and results in DNA completely breaking

• True

• False

Which of the following is a form of moist heat that is a sterilant

• Boiling water

• Autoclave

• Pasteurization

• Incineration

The shortest length of time needed to kill all microbes at a specific temperature is the thermal death time

• True

• False

A sporicide

• is a chemical that destroys bacteria except endospores

• is a chemical that prevents the growth of bacteria, but does not kill them

• is a chemical able to destroy endospores

• is a chemical able to destroy fungi

Select the chemicals that can act as sterilants

• hydrogen peroxide

• phenols

• Quaternary ammonium compounds

• Ethylene oxide gas

• Glutaraldehyde

A surfactant

• unfolds proteins

• causes thymine-dimers

• disrupts selective permeability of membranes

• disrupts cell walls