LAT Unit Two Exam questions with verified
answers
A room will be at what type of pressure if the airflow into the room is
greater than the exhaust flow out? Ans✓✓✓ Positive
An improper light cycle and excessive noise levels have been
documented to have negative effects on what biological process of
rodents? Ans✓✓✓ Reproduction
At what biosafety level would highly infectious agents without a known
effective treatment be found? Ans✓✓✓ 4
Detergents containing this class of compound should never be used to
clean amphibian housing? Ans✓✓✓ Phenolics
Fish can develop what condition of the water becomes oversaturated
with dissolved gases? Ans✓✓✓ Gas bubble disease
HEPA filters are only efficient up to _____ of particulate matter?
Ans✓✓✓ 99.97%
How do biological indicators demonstrate ineffective sterilization?
Ans✓✓✓ The indicator organism grows in culture
, How is ammonia gas produced in soiled cage bedding? Ans✓✓✓ From
bacterial metabolism of urine products
How many general classes of biological safety cabinets are there?
Ans✓✓✓ 3
Some microorganisms survive dry heat sterilization by producing what
structure? Ans✓✓✓ Spores
What agency requires that disinfectant label claims be truthful?
Ans✓✓✓ United States Environmental Protection Agency
What aquatic species was previously used in pregnancy assays?
Ans✓✓✓ African clawed frog
What are the byproducts of ammonia breakdown? Ans✓✓✓ Nitrite and
nitrate
What can be used as a biological filter for an aquatic tank system?
Ans✓✓✓ Gravel
What criteria must be met for UV light to kill microorganisms?
Ans✓✓✓ Water must flow at the proper rate
What do individual ventilated cages control? Ans✓✓✓ Air quality
answers
A room will be at what type of pressure if the airflow into the room is
greater than the exhaust flow out? Ans✓✓✓ Positive
An improper light cycle and excessive noise levels have been
documented to have negative effects on what biological process of
rodents? Ans✓✓✓ Reproduction
At what biosafety level would highly infectious agents without a known
effective treatment be found? Ans✓✓✓ 4
Detergents containing this class of compound should never be used to
clean amphibian housing? Ans✓✓✓ Phenolics
Fish can develop what condition of the water becomes oversaturated
with dissolved gases? Ans✓✓✓ Gas bubble disease
HEPA filters are only efficient up to _____ of particulate matter?
Ans✓✓✓ 99.97%
How do biological indicators demonstrate ineffective sterilization?
Ans✓✓✓ The indicator organism grows in culture
, How is ammonia gas produced in soiled cage bedding? Ans✓✓✓ From
bacterial metabolism of urine products
How many general classes of biological safety cabinets are there?
Ans✓✓✓ 3
Some microorganisms survive dry heat sterilization by producing what
structure? Ans✓✓✓ Spores
What agency requires that disinfectant label claims be truthful?
Ans✓✓✓ United States Environmental Protection Agency
What aquatic species was previously used in pregnancy assays?
Ans✓✓✓ African clawed frog
What are the byproducts of ammonia breakdown? Ans✓✓✓ Nitrite and
nitrate
What can be used as a biological filter for an aquatic tank system?
Ans✓✓✓ Gravel
What criteria must be met for UV light to kill microorganisms?
Ans✓✓✓ Water must flow at the proper rate
What do individual ventilated cages control? Ans✓✓✓ Air quality
