Disinfectants

Question 1

Phenols

i.e. Lysol

Answer 1

Affect the permeability of the microbe cell membrane; effective against both gram + and gram - bacteria, some viruses and fungi

Question 2

QUATS

i.e Rocal

Answer 2

Dissolve lipids in the cell wall and membrane; both gram - and gram + bacteria, some viruses and fungi

Question 3

Aldehydes

i.e. Formaldehyde, Glutaraldehyde

Answer 3

Affect the protein structure of microbes; effective against gram + and gram - bacteria, fungi, viruses

Question 4

Ethylene Oxide

i.e. gas sterilization

Answer 4

Destroys DNA and microbial proteins; effective against gram + and gram - bacteria, fungi, and viruses

Question 5

Alcohol

Answer 5

Dissolve membrane lipids and coagulate microbial proteins; effective against gram + and gram - bacteria, fungi and viruses

Question 6

Halogens

i.e. Chlorine, Iodine

Answer 6

Interfere with proteins and enzymes of the microbes

Question 7

Biguanides

i.e. Chlorohexadine

Answer 7

Denature microbial proteins; effective against gram + and gram - bacteria, fungi and viruses

Question 8

Hydrogen peroxide

Answer 8

Anaerobic bacteria; used on living and inanimate objects