AALAS LAT CERTIFICATION EXAM TEST
BANK 2 2026/2027 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |CURRENTLY
TESTING QUESTIONS AND
SOLUTIONS|ALREADY GRADED
A+|NEWEST |BRAND NEW VERSION!!|
|LATEST UPDATE
What usually helps determine animal facility design?
a. Preference of the facility manager
b. Investigator financial contributions
c. Nature of the research and testing activities
d. Number of animal care staff
c. Nature of the research and testing activities
What relative humidity range does the Guide recommend for most mammalian species?
a. 20%-50%
b. 30%-70%
c. 40%-80%
d. 50%-90%
b. 30%-70%
What does positive air pressure within a room do?
a. Creates an airlock
b. Helps prevent outside contaminants from entering the room
c. Promotes the growth of bacteria in a room
d. Prevents the contaminants in a room from escaping
1|Page
,b. Helps prevent outside contaminants from entering the room
What type of floor plan is designed so that each room has exit doors to a dirty corridor that
wraps around the periphery of the floor plan?
a. Single-corridor
b. Two-corridor
c. Three-corridor
d. Mixed
c. Three-corridor
What is the smallest sized particle that HEPA filters are able to remove?
a. 0.2 microns
b. 0.3 microns
c. 0.4 microns
d. 0.5 microns
b. 0.3 microns
Which animal is required by the Animal Welfare Act to have psychological enrichment?
a. Hamsters
b. Dogs
c. Rabbits
d. Nonhuman primates
d. Nonhuman primates
What term refers to the complete removal of all visible debris from a surface?
a. Sanitizing
b. Sterilizing
c. Cleaning
d. Disinfecting
c. Cleaning
2|Page
,Which of the following is a factor of the decontamination or sterilization agent that will NOT
determine success?
a. Contact time
b. Distribution
c. Penetration
d. Acidity of agent
d. Acidity of agent
Which of the following regulates disinfectants and sterilizers used on hard surfaces?
a. United States Food & Drug Administration
b. United States Department of Agriculture
c. United States Environmental Protection Agency
d. United States Department of Health and Human Services
c. United States Environmental Protection Agency
What is the spectrum of activity?
a. Temperature range at which a product has been tested
b. The range of time a product should be on a surface to work effectively
c. Specific organisms against which the product was tested
d. Ultraviolet light range the product needs in which to be effective
c. Specific organisms against which the product was tested
Which of the following is a disinfectant?
a. Formaldehyde gas
b. Alcohols
c. Peracetic acid
d. Aldehydes
b. Alcohols
3|Page
, Which of the following is the least potent sterilizer?
a. Gamma radiation
b. Beta radiation
c. Ultraviolet radiation
d. They are all the same in effectiveness.
c. Ultraviolet radiation
Which method of monitoring the effectiveness of sanitation or sterilization uses spores in a vial?
a. Microbial swaps
b. Biological indicators
c. RODAC plates
d. Bioluminescence monitoring systems
b. Biological indicators
Which of the following is an example of a primary barrier?
a. Airlock
b. Shower area
c. Biological safety cabinet
d. Locker room
c. Biological safety cabinet
What is relative humidity?
a. The percentage of water that air can hold
b. The amount of water inside a cage
c. The humidity level required for an animal to thrive
d. The temperature at which air is completely saturated with moisture
a. The percentage of water that air can hold
Which statement is true about thermometers?
a. Wet-bulb temperature readings are always higher than dry-bulb thermometers.
4|Page
BANK 2 2026/2027 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |CURRENTLY
TESTING QUESTIONS AND
SOLUTIONS|ALREADY GRADED
A+|NEWEST |BRAND NEW VERSION!!|
|LATEST UPDATE
What usually helps determine animal facility design?
a. Preference of the facility manager
b. Investigator financial contributions
c. Nature of the research and testing activities
d. Number of animal care staff
c. Nature of the research and testing activities
What relative humidity range does the Guide recommend for most mammalian species?
a. 20%-50%
b. 30%-70%
c. 40%-80%
d. 50%-90%
b. 30%-70%
What does positive air pressure within a room do?
a. Creates an airlock
b. Helps prevent outside contaminants from entering the room
c. Promotes the growth of bacteria in a room
d. Prevents the contaminants in a room from escaping
1|Page
,b. Helps prevent outside contaminants from entering the room
What type of floor plan is designed so that each room has exit doors to a dirty corridor that
wraps around the periphery of the floor plan?
a. Single-corridor
b. Two-corridor
c. Three-corridor
d. Mixed
c. Three-corridor
What is the smallest sized particle that HEPA filters are able to remove?
a. 0.2 microns
b. 0.3 microns
c. 0.4 microns
d. 0.5 microns
b. 0.3 microns
Which animal is required by the Animal Welfare Act to have psychological enrichment?
a. Hamsters
b. Dogs
c. Rabbits
d. Nonhuman primates
d. Nonhuman primates
What term refers to the complete removal of all visible debris from a surface?
a. Sanitizing
b. Sterilizing
c. Cleaning
d. Disinfecting
c. Cleaning
2|Page
,Which of the following is a factor of the decontamination or sterilization agent that will NOT
determine success?
a. Contact time
b. Distribution
c. Penetration
d. Acidity of agent
d. Acidity of agent
Which of the following regulates disinfectants and sterilizers used on hard surfaces?
a. United States Food & Drug Administration
b. United States Department of Agriculture
c. United States Environmental Protection Agency
d. United States Department of Health and Human Services
c. United States Environmental Protection Agency
What is the spectrum of activity?
a. Temperature range at which a product has been tested
b. The range of time a product should be on a surface to work effectively
c. Specific organisms against which the product was tested
d. Ultraviolet light range the product needs in which to be effective
c. Specific organisms against which the product was tested
Which of the following is a disinfectant?
a. Formaldehyde gas
b. Alcohols
c. Peracetic acid
d. Aldehydes
b. Alcohols
3|Page
, Which of the following is the least potent sterilizer?
a. Gamma radiation
b. Beta radiation
c. Ultraviolet radiation
d. They are all the same in effectiveness.
c. Ultraviolet radiation
Which method of monitoring the effectiveness of sanitation or sterilization uses spores in a vial?
a. Microbial swaps
b. Biological indicators
c. RODAC plates
d. Bioluminescence monitoring systems
b. Biological indicators
Which of the following is an example of a primary barrier?
a. Airlock
b. Shower area
c. Biological safety cabinet
d. Locker room
c. Biological safety cabinet
What is relative humidity?
a. The percentage of water that air can hold
b. The amount of water inside a cage
c. The humidity level required for an animal to thrive
d. The temperature at which air is completely saturated with moisture
a. The percentage of water that air can hold
Which statement is true about thermometers?
a. Wet-bulb temperature readings are always higher than dry-bulb thermometers.
4|Page
