WorksheetsIntro to micro control of microorganisms LU 3
Total questions: 17
Worksheet time: 13mins
These are ammonium salts, chemical disinfectants and antiseptics that act by disrupting biological membranes and possibly by denaturing proteins.
Phenolic compounds
Aldehydes
Alcohols
Quaternary Ammonium compounds
Halogens
This is a concentrated form of formaldehyde that is used in the mortuary
glutaraldehyde
formalin
formaldehyde
phenol
Match the following
Quats
Formula 409
phenolic compunds
hexachlorophene
alcohol
Isopropanol
halogens
iodophors
aldehydes
glutaraldehyde
What is a substance that destroys microorganisms; is a chemical agent that will kill various microorganisms, but not necessarily their spores referred to as?
germicide
bactericide
virucide
fungicide
larvicide
When an object is free of all forms of life including bacterial endospores and viruses, it is said to be?
sterile
clean
bacteriostatic
disinfected
Cresols are phenolic compounds that are derived from a chemical known as toluene.
true
false
This is a form of non-ionizing radiation that can effectively control the growth of microorganisms by damaging its DNA, its genetic material
sunlight
ultaviolet light
daylight
x-rays
Ethyl alcohol is the most widely used alchol and is normally used at a concetration between 60 and 95%.
true
false
scrubbing
filtration
halogens
alcohols
boiling
incineration
phenols
ultraviolter light
fungicide
autoclave
What is an agent that prevents or inhibits growth of microbes, but is safe to use on human tissues is called?
alcoholic agent
incineration agent
sterilization agent
antiseptic agent
What is the process of completely removing or destroying all life forms, and their products including endospores referred to as?
disinfection
sanitation
sterilization
filtration
What is the process by which microbial growth is inhibited on living tissue to prevent infection called?
bacteriostasis
disinfection
sterilization
sanitation
What group of disinfectants includes chlorine, bleach, and iodine, and work by oxidizing the components of the microbial cells.
Alcohols
Halogens
Phenols
Aldehydes
Germicides
What is an agent that destroys bacteria but not necessarily their spores called?
bactericide
virucide
germicide
insecticides
larvicides
This method of microbial growth does not inactivate spores, but does kill most vegetative microorganisms
incineration
disinfection
sterilization
scrubbing
(a) is more effective against bacteria and (b) is more effective against viruses.
isopropanol
ethanol
What are chemical agents that kill the larval which are wormlike forms of newly hatched insects referred to as?
fungicide
larvicides
fungicide
virucide
germicide
