Question 1
If disease occurrence in a population is described as being at a frequency above the
expected number in a specific area and time it is considered:
. Sporadic
A
B. Endemic
C. Epidemic
D. Pandemic
E. Parademic
nswer:
A
C. Epidemic
xplanation:
E
An epidemic refers to disease occurrence at a level higher than expected within a specific
geographic area and time period.
Endemic refers to a disease constantly present in a population, while pandemic refers to
worldwide spread.
Question 2
The study of the cause of disease states is called:
. Etiology
A
B. Anatomy
C. Ecology
D. Physiology
nswer:
A
A. Etiology
xplanation:
E
Etiology is the study of the cause or origin of diseases.
Anatomy studies structure, physiology studies function, and ecology studies interactions
between organisms and their environment.
, Question 3
ccording to Koch's postulates, what is the significance of causing disease in a
A
healthy subject with a pure culture of the pathogen?
. It confirms the pathogen can be grown in laboratory conditions.
A
B. It demonstrates that the disease can be treated with medication.
C. It proves that the disease is not genetic.
D. It satisfies the need for experimental evidence linking the pathogen to the disease.
nswer:
A
D. It satisfies the need for experimental evidence linking the pathogen to the disease.
xplanation:
E
This step demonstrates that the pathogen directly causes the disease when introduced into
a healthy host, providing experimental proof of causation.
Question 4
rue or False: The presence of a pathogen alone is always sufficient to trigger an
T
infection in a host.
. True
A
B. False
nswer:
A
B. False
xplanation:
E
Infection depends on multiple factors including host immunity, pathogen dose, and
environmental conditions. The presence of a pathogen alone does not guarantee infection.
Question 5
If you wanted to investigate the environmental factors that may lead to disease in a
human population, whom would you consult?
. Anthropologist
A
B. Epidemiologist
C. Microbiologist
D. Neuropathologist
nswer:
A
B. Epidemiologist