Extra And Intra Mural Micro

Question 1

Extramural microbiology

Answer 1

Study of microorganisms associated with outdoor environments. It includes spread of agricultural pathogens, the spread of airborne pathogens associated with waste environment and germ warfare.

Question 2

Biological Air Filtration BAF

Answer 2

BAF is a method of air purification. This uses microbes for the removal of organic contents.
It is the dual phase air purification system that operates by diffusion of air pollutants out of the vapor phase through the gas permeable membrane and into the liquid phase, where the biofilm containing specialized microbial communities is able to degrade them.

Question 3

Ventilation

Answer 3

It is the method most commonly used to prevent the accumulation of airborne particles. This mechanism involves creating a flow of air through areas where airborne contamination occurs. It relies on mixing internal air with external air to reduce the concentration of airborne particles.

Question 4

Filtration

Answer 4

Unidirectional airflow filtration is a relatively simple and yet effective method for control of airborne contamination.

Question 5

Biocidal Control

Answer 5

It represents an added treatment that can be used to eradicate all airborne microorganisms, ensuring that they are no longer viable and capable of causing infection. For example, superheating and UV irradiation.

Question 6

Isolation

Answer 6

Isolation is the enclosure of an environment through the use of positive or negative pressurized air gradients and airtight seals.

Question 7

Biosafety level 1

Answer 7

Indicate laboratories where well characterized agents that are not associated with disease in healthy adult humans are handled i.e teaching laboratories.

Question 8

Biosafety level 2

Answer 8

indicates an area where work is performed using agents that are of moderate hazard to humans and the environment Personnel have specialized training in the handling of pathogens. Many procedures are conducted in biological safety level II cabinets.

Question 9

Biosafety level 3

Answer 9

agents that can cause serious diseases as an AMB exposure are handled.

Question 10

Biosafety level 4

Answer 10

highest level of control. Microorganisms That Have High Potential For Life threatening diseases are handled ✓100% isolated from other areas of a building ✓In general all air into and out of these laboratories is sterilized by filtration and germicidal treatment