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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
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slow
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? may actually preserve cultures
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freezing
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Dehydration of vegetative cells when directly exposed to normal room air is ?
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dessication
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A combination of freezing and drying called ? is used to preserve microorganisms and other cells in a viable state for many years
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lycophilization
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Energy emitted fro atomic activities and dispersed at high velocity through matter or space is ?
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radiation
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The highest form of microbial control with radiation is ? followed by ? and ?
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Gamma rays
x-rays U_V |
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? radiation ejects orbital electrons from an atom causing ions to form and this is the form used in the post office
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Ionizing
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? radiation excites atoms by raising them to a higher energy state but does not ionize them
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Non-ionizing
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Ionizing radiation creates highly reactive ? radicals
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hydroxyl
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Ionizing radiation can be used with plastics from the lab like ?,?,?,?
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hockey sticks
pipettes tubes loops |
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Ultraviolet rays are ? rays
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non-ionizing
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? lamps are not as penetrating as ionizing radiation .
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Germidal
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U-V rays are powerful tools for destroying ? cells and ?, ? vegetative cells, ? and ?
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fungal
spores bacterial protozoa viruses |
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U-V rays are usually used for ? rather than ?
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disinfection
sterilization |
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U-V rays are used to sterilize some ?
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vaccines
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Decontamination by ? is effective for removing microbes from air and liquids.
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filtration
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? 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.
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mycoplams
viruses prions |
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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.
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heat
flavor HEPA |
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HEPA filter =?
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High-efficiency-particle-air
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A microbicidal chemical is chosen because it has rapid action even in ? concentrations it is soluble in water or alcohol and has long term ?
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low
stability |
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Microbicidal chemicals can penetrate ? surfaces to sustain a cumulative or persistent action.
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inanimate
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Microbicidal chemicals are used for sanitizing and ? they are ? and are readily available
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deodorizing
affordable |
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There are approximately ? different antimicrobial chemical agents manufactured and about ? are routinely used in health care and homes
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10,000
1,000 |
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solutions that dissolve in pure alcohol or water-alcohol mixtures are ?
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tinctures
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