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24 Cards in this Set

  • Front
  • Back
Cold acts to ? growth of cultures and microbes in food during processing and storage
slow
? may actually preserve cultures
freezing
Dehydration of vegetative cells when directly exposed to normal room air is ?
dessication
A combination of freezing and drying called ? is used to preserve microorganisms and other cells in a viable state for many years
lycophilization
Energy emitted fro atomic activities and dispersed at high velocity through matter or space is ?
radiation
The highest form of microbial control with radiation is ? followed by ? and ?
Gamma rays
x-rays
U_V
? radiation ejects orbital electrons from an atom causing ions to form and this is the form used in the post office
Ionizing
? radiation excites atoms by raising them to a higher energy state but does not ionize them
Non-ionizing
Ionizing radiation creates highly reactive ? radicals
hydroxyl
Ionizing radiation can be used with plastics from the lab like ?,?,?,?
hockey sticks
pipettes
tubes
loops
Ultraviolet rays are ? rays
non-ionizing
? lamps are not as penetrating as ionizing radiation .
Germidal
U-V rays are powerful tools for destroying ? cells and ?, ? vegetative cells, ? and ?
fungal
spores
bacterial
protozoa
viruses
U-V rays are usually used for ? rather than ?
disinfection
sterilization
U-V rays are used to sterilize some ?
vaccines
Decontamination by ? is effective for removing microbes from air and liquids.
filtration
? have no cell wall which makes them flexible so they are able to squeeze through filters and ? and ? are small enough to fit through too.
mycoplams

viruses
prions
Filtration can be used for liquids that can't withstand ? and it preserves ? Filtration is also used in form of ? filters to remove airborne contaminents.
heat
flavor
HEPA
HEPA filter =?
High-efficiency-particle-air
A microbicidal chemical is chosen because it has rapid action even in ? concentrations it is soluble in water or alcohol and has long term ?
low

stability
Microbicidal chemicals can penetrate ? surfaces to sustain a cumulative or persistent action.
inanimate
Microbicidal chemicals are used for sanitizing and ? they are ? and are readily available
deodorizing

affordable
There are approximately ? different antimicrobial chemical agents manufactured and about ? are routinely used in health care and homes
10,000

1,000
solutions that dissolve in pure alcohol or water-alcohol mixtures are ?
tinctures