1. What is the term used to describe a microorganism that

can cause infectious disease?

a) Pathogen

b) Vector

c) Fomite

d) Reservoir

Answer: A. Pathogen is the term used to describe a diseaseproducing microorganism, such as a virus, parasite, fungus,

or bacterium [2].

2. What is the name of the environment or habitat where a

pathogen can live and multiply?

a) Reservoir

b) Portal of exit

c) Mode of transmission

d) Portal of entry

Answer: A. Reservoir is the name of the environment or

habitat where a pathogen can live and multiply. Examples

of reservoirs are environmental surfaces, equipment, body

fluids, food, water, soil, skin, and respiratory tract [2].

3. What is the route by which an infectious agent escapes

or leaves the reservoir?

a) Reservoir

b) Portal of exit

c) Mode of transmission

d) Portal of entry

Answer: B. Portal of exit is the route by which an

infectious agent escapes or leaves the reservoir. In humans,