Laboratory Animal Science (LAS) Final Exam
LABORATORY ANIMAL SCIENCE (LAS) FINAL EXAM NEWEST
2025/2026 WITH COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!!
What is the term for a disease that is present but is not apparent to the observer? - ANSWER-
Subclinical
Why would a researcher choose to perform inbred mating? - ANSWER-To create a group of
animals with genetic similarity
The committee that is comprised of multiple intraorganization members, with the addition of at
least one outside entity, which is charged with internal regulation of animal use at an institution
is: - ANSWER-The IACUC
What is a sign that neonatal mice are nursing well? - ANSWER-A white spot on the ventral left
abdomen
Which of the following is a common and acceptable means to euthanize mice? - ANSWER-CO2
asphyxiation
Animals that are most active at night are called: - ANSWER-Nocturnal
If a female mouse is exposed to the pheromones of a male mouse within the first four days of
pregnancy she will often abort. This is called: - ANSWER-The Bruce Effect
Which governmental organization publishes a "Guide" on the care and use of laboratory
animals? - ANSWER-The NIH
1|Page
, Laboratory Animal Science (LAS) Final Exam
The label on a bag of rat chow indicates an energy density of 35Cal/gram. How many calories
are provided by 2 grams of this food? - ANSWER-70 calories
Which of the following most correctly lists the energy producing nutrients in order from highest
energy density (most Calories per gram) to lowest energy density (least Calories per gram) -
ANSWER-Fat, Carbohydrate, Protein
To replace, as it relates to the three R's, can include changing the experimental design by: -
ANSWER-Using a computer model if available
Biological Safety Levels (BSL) are established for laboratories to give a clear indication of the
hazards that are represented at the facility. Which of the following is a correct statement? -
ANSWER-BSL 2 levels present less hazard then BSL 3 levels
What is it called when a medication is used in a manner inconsistent with the information listed
on the pharmaceutical's label? - ANSWER-Extra Label Usage
SPF stands for (as it relates to laboratory animal science): - ANSWER-Specific Pathogen Free
LCM is: - ANSWER-All of the above
Lymphocytic Choriomeningitis Virus
-a potentially serious zoonotic disease
-prevalent in many laboratory species
An animal receiving medication prn q24h is getting treated: - ANSWER-"as needed" every 1 day
2|Page
, Laboratory Animal Science (LAS) Final Exam
The word static, as it refers to antibiotic medication, means: - ANSWER-To slow microbial
growth
Their natural predisposition to seizures makes these animals a good biomedical model for
epilepsy: - ANSWER-Meriones unguiculatus
rats of the genus Rattus and mice of the genus Mus are not covered by the animal welfare act? -
ANSWER-true
which animal below is covered by the animal welfare act? - ANSWER-rabbit
animals used in research, testing, or experiments involving accompanying pain or distress to the
animals and for which pain relieving drugs, anesthetics, were used should be placed under
which USDA category? - ANSWER-Category D
the public health service policy on humane care and use of laboratory animals is administered
by whom? - ANSWER-office of laboratory animal welfare (OLAW)
Which teeth are open-rooted in the rabbit? - ANSWER-All of the teeth
Which teeth are open-rooted in the mouse? - ANSWER-Incisors
Stainless steel is commonly used to construct laboratory animal housing. What is one benefit of
this material in the lab? What is one disadvantage? - ANSWER-Benefit: Durable, difficult to
bend, easy to clean, long lasting.
Disadvantages: Expensive
How do you convert a percent to mg/mL? - ANSWER-Percent multiplied by 10
3|Page
LABORATORY ANIMAL SCIENCE (LAS) FINAL EXAM NEWEST
2025/2026 WITH COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!!
What is the term for a disease that is present but is not apparent to the observer? - ANSWER-
Subclinical
Why would a researcher choose to perform inbred mating? - ANSWER-To create a group of
animals with genetic similarity
The committee that is comprised of multiple intraorganization members, with the addition of at
least one outside entity, which is charged with internal regulation of animal use at an institution
is: - ANSWER-The IACUC
What is a sign that neonatal mice are nursing well? - ANSWER-A white spot on the ventral left
abdomen
Which of the following is a common and acceptable means to euthanize mice? - ANSWER-CO2
asphyxiation
Animals that are most active at night are called: - ANSWER-Nocturnal
If a female mouse is exposed to the pheromones of a male mouse within the first four days of
pregnancy she will often abort. This is called: - ANSWER-The Bruce Effect
Which governmental organization publishes a "Guide" on the care and use of laboratory
animals? - ANSWER-The NIH
1|Page
, Laboratory Animal Science (LAS) Final Exam
The label on a bag of rat chow indicates an energy density of 35Cal/gram. How many calories
are provided by 2 grams of this food? - ANSWER-70 calories
Which of the following most correctly lists the energy producing nutrients in order from highest
energy density (most Calories per gram) to lowest energy density (least Calories per gram) -
ANSWER-Fat, Carbohydrate, Protein
To replace, as it relates to the three R's, can include changing the experimental design by: -
ANSWER-Using a computer model if available
Biological Safety Levels (BSL) are established for laboratories to give a clear indication of the
hazards that are represented at the facility. Which of the following is a correct statement? -
ANSWER-BSL 2 levels present less hazard then BSL 3 levels
What is it called when a medication is used in a manner inconsistent with the information listed
on the pharmaceutical's label? - ANSWER-Extra Label Usage
SPF stands for (as it relates to laboratory animal science): - ANSWER-Specific Pathogen Free
LCM is: - ANSWER-All of the above
Lymphocytic Choriomeningitis Virus
-a potentially serious zoonotic disease
-prevalent in many laboratory species
An animal receiving medication prn q24h is getting treated: - ANSWER-"as needed" every 1 day
2|Page
, Laboratory Animal Science (LAS) Final Exam
The word static, as it refers to antibiotic medication, means: - ANSWER-To slow microbial
growth
Their natural predisposition to seizures makes these animals a good biomedical model for
epilepsy: - ANSWER-Meriones unguiculatus
rats of the genus Rattus and mice of the genus Mus are not covered by the animal welfare act? -
ANSWER-true
which animal below is covered by the animal welfare act? - ANSWER-rabbit
animals used in research, testing, or experiments involving accompanying pain or distress to the
animals and for which pain relieving drugs, anesthetics, were used should be placed under
which USDA category? - ANSWER-Category D
the public health service policy on humane care and use of laboratory animals is administered
by whom? - ANSWER-office of laboratory animal welfare (OLAW)
Which teeth are open-rooted in the rabbit? - ANSWER-All of the teeth
Which teeth are open-rooted in the mouse? - ANSWER-Incisors
Stainless steel is commonly used to construct laboratory animal housing. What is one benefit of
this material in the lab? What is one disadvantage? - ANSWER-Benefit: Durable, difficult to
bend, easy to clean, long lasting.
Disadvantages: Expensive
How do you convert a percent to mg/mL? - ANSWER-Percent multiplied by 10
3|Page
