ALAT - Assistant Laboratory Animal Technician Assistant Laboratory Animal Technician Facility Environment and Management 1

Question 1

What is the recommended temperature range for most laboratory rodent housing rooms?

Accepted Answer

64–79°F (18–26°C)

Answer

60–65°F (15–18°C)

Answer

80–85°F (27–29°C)

Answer

50–60°F (10–15°C)

Question 2

Which air pressure relationship is maintained in a barrier animal room to prevent contamination from entering?

Accepted Answer

Positive pressure relative to the corridor

Answer

Negative pressure relative to the corridor

Answer

Equal pressure to the corridor

Answer

Alternating pressure cycles throughout the day

Question 3

What is the standard recommended number of air changes per hour (ACH) for animal housing rooms?

Accepted Answer

10–15 ACH

Answer

2–5 ACH

Answer

6–9 ACH

Answer

20–25 ACH

Question 4

Why is a consistent light/dark cycle important in a laboratory animal facility?

Accepted Answer

It regulates animals' circadian rhythms and can affect research outcomes

Answer

It reduces electricity costs during off-hours

Answer

It prevents nocturnal animals from disturbing staff

Answer

It is required only for primate species, not rodents

Question 5

What is the primary purpose of an antechamber (or airlock) at the entrance to a barrier animal room?

Accepted Answer

To provide a transition zone that minimizes contamination when entering or exiting

Answer

To store animal feed and bedding supplies

Answer

To house the HVAC controls for that room

Answer

To serve as a quarantine space for new animal shipments

Question 6

How should relative humidity (RH) typically be maintained in laboratory animal rooms?

Accepted Answer

Between 30–70% RH

Answer

Below 20% RH to inhibit microbial growth

Answer

Between 75–90% RH to keep animals hydrated

Answer

Humidity is not regulated and does not affect animals