Final answer:
The most frequently used methods of containing airborne contaminants include HEPA filtration, biological safety cabinets, and protective mechanisms.
Step-by-step explanation:
The most frequently used methods of containing airborne contaminants include:
- HEPA filtration: High-efficiency particulate air (HEPA) filters are commonly used in hospitals, surgical suites, and laboratories to prevent the transmission of airborne microbes. These filters have small enough pores to capture bacterial cells, endospores, and many viruses.
- Biological safety cabinets: These cabinets use HEPA filters to remove particulates from the air entering or leaving the cabinet, creating a clean area for handling biological materials and preventing laboratory pathogens from contaminating the environment.
- Protective mechanisms: The respiratory system has protective mechanisms, such as nasal hairs and mucus, that trap small particles, viruses, bacteria, dust, and dirt to prevent their entry into the lungs.