Assistant Laboratory Animal Technician (ALAT) Practice Exam

Which waste gases are effectively reduced through proper ventilation in animal rooms?

1. Nitrogen and oxygen

2. Ammonia and carbon dioxide

3. Hydrogen and methane

4. Acetylene and sulfur dioxide

The correct answer is: Ammonia and carbon dioxide

The correct answer highlights the importance of managing specific waste gases commonly produced in animal rooms, particularly ammonia and carbon dioxide. Proper ventilation is critical in maintaining a healthy environment for both the animals and personnel. Ammonia is a byproduct of urine breakdown, and elevated levels can lead to respiratory issues and other health problems for animals. Adequate ventilation helps dilute ammonia concentrations, thereby reducing its detrimental effects. Carbon dioxide is produced as a result of animal metabolism. If allowed to accumulate, it can lead to increased respiratory rates and discomfort for the animals. Effective ventilation systems help to ensure that carbon dioxide levels remain within safe limits, promoting better animal welfare and research outcomes. Other options listed do not represent the primary waste gases generated in typical laboratory animal housing environments. For instance, while hydrogen and methane may be present in specific circumstances, they are not common concerns in standard animal care settings. Acetylene and sulfur dioxide are also less relevant to the context of animal rooms and their associated waste management practices. Thus, focusing on ammonia and carbon dioxide highlights the critical role of ventilation in supporting proper animal care and research conditions.