37550373
Questão 1
Questão
Air flow in a microbiology laboratory should be:
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from lower to higher risk areas
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minimized as much as possible
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optimized to prevent the settling of dangerous aerosols
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well-filtered by recirculating it through numerous filters before recycling
Questão 2
Questão
Procedures such as grinding, mincing, vortexing, and preparing smears:
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are hazardous and should be performed while wearing gloves and gown protection.
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create aerosol droplets and should be performed only in an approved biosafety cabinet.
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should be avoided with specimens known to contain infectious agents
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produce a spill hazard and should be performed over an absorptive mat.
Questão 3
Questão
Class I biological safety cabinets:
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sterilize the air as it passes over the material in the cabinet
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protect the environment from contamination by biological agents by filtering the air as it is exhausted from the cabinet.
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are completely enclosed and have gloves that enable the worker to manipulate the material in the cabinet.
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are often called laminar flow hoods.
Questão 4
Questão
Optimal protection of specimen, personnel, and environment is accomplished with which class of biological safety cabinet?
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Class I
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Class II
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Class III
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Class IV
Questão 5
Questão
The method of choice for sterilizing items such as antibiotic solutions, chemicals, radioisotopes, and vaccines that are heat-sensitive is:
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dry, low temperature heat.
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moist, low temperature heat.
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filtration
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chemical
Questão 6
Questão
To be sterilized in an autoclave, infectious medical waste should be:
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packed tightly to avoid dangerous pressure pockets.
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processed for 15 to 20 minutes at 121 C and 30 pounds per square inch (psi) pressure.
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processed for 30 to 60 minutes at 132C and 15 psi pressure
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processed for at least 1 hour at 121 C and 15 psi pressure.
Questão 7
Questão
The autoclave sterilizes material by:
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applying dry heat at high temperatures and pressure.
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infusing gaseous chemicals that kill organisms.
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applying moist heat at high temperatures and increased pressure.
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cleaving protein bonds found in most biological agent cell walls.
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