Chapter 14 Principles of Disease and Epidemiology
Study online at https://quizlet.com/_hpg449
1. 1) A commensal bacterium
A) does not receive any benefit from its host.
B) is beneficial to its host.
C) may also be an opportunistic pathogen.
D) does not infect its host.
E) is beneficial to, and does not infect, its host.: C) may also be an opportunistic pathogen.
2. 2) Which of the following statements is TRUE?
A) At least one member must not benefit in a symbiotic relationship.
B) Members of a symbiotic relationship cannot live without each other.
C) A parasite is not in symbiosis with its host.
D) Symbiosis refers to different organisms living together and benefiting from
each other.
E) At least one member must benefit in a symbiotic relationship.: E) At least one
member must benefit in a symbiotic relationship
3. 3) A nosocomial infection is
A) always present, but is inapparent at the time of hospitalization.
B) acquired during the course of hospitalization.
C) always caused by medical personnel.
D) only a result of surgery.
E) always caused by pathogenic bacteria.: B) acquired during the course of hospitalization.
4. 4) The major significance of Robert Koch's work is that
A) microorganisms are present in a diseased animal.
B) diseases can be transmitted from one animal to another.
C) microorganisms can be cultured.
D) microorganisms cause disease.
E) microorganisms are the result of disease.: D) microorganisms cause disease.
5. 5) Which of the following is NOT a verified exception in the use of Koch's
postulates?
, Chapter 14 Principles of Disease and Epidemiology
Study online at https://quizlet.com/_hpg449
A) Some diseases have poorly defined etiologies.
B) Some pathogens can cause several disease conditions.
C) Some human diseases have no other known animal host.
D) Some diseases are not caused by microbes.
E) Some diseases are noncommunicable.: E) Some diseases are noncommunicable.
6. 6) Which of the following diseases is NOT spread by droplet infection?
A) botulism
B) tuberculosis
C) measles
D) the common cold
E) diphtheria: A) botulism
7. 7) Biological transmission differs from mechanical transmission in that bio-
logical transmission
A) requires an arthropod.
B) involves fomites.
C) involves specific diseases.
D) requires direct contact.
E) works only with noncommunicable diseases.: C) involves specific diseases.
8. 8) Which of the following definitions is INCORRECT?
A) endemic: a disease that is constantly present in a population
B) epidemic: a disease that is endemic across the world
C) pandemic: a disease that affects a large number of people in the world in a
short time
D) sporadic: a disease that affects a population occasionally
E) incidence: number of new cases of a disease: B) epidemic: a disease that is endemic across
the world
9. 9) Focal infections initially start out as
A) sepsis.
Study online at https://quizlet.com/_hpg449
1. 1) A commensal bacterium
A) does not receive any benefit from its host.
B) is beneficial to its host.
C) may also be an opportunistic pathogen.
D) does not infect its host.
E) is beneficial to, and does not infect, its host.: C) may also be an opportunistic pathogen.
2. 2) Which of the following statements is TRUE?
A) At least one member must not benefit in a symbiotic relationship.
B) Members of a symbiotic relationship cannot live without each other.
C) A parasite is not in symbiosis with its host.
D) Symbiosis refers to different organisms living together and benefiting from
each other.
E) At least one member must benefit in a symbiotic relationship.: E) At least one
member must benefit in a symbiotic relationship
3. 3) A nosocomial infection is
A) always present, but is inapparent at the time of hospitalization.
B) acquired during the course of hospitalization.
C) always caused by medical personnel.
D) only a result of surgery.
E) always caused by pathogenic bacteria.: B) acquired during the course of hospitalization.
4. 4) The major significance of Robert Koch's work is that
A) microorganisms are present in a diseased animal.
B) diseases can be transmitted from one animal to another.
C) microorganisms can be cultured.
D) microorganisms cause disease.
E) microorganisms are the result of disease.: D) microorganisms cause disease.
5. 5) Which of the following is NOT a verified exception in the use of Koch's
postulates?
, Chapter 14 Principles of Disease and Epidemiology
Study online at https://quizlet.com/_hpg449
A) Some diseases have poorly defined etiologies.
B) Some pathogens can cause several disease conditions.
C) Some human diseases have no other known animal host.
D) Some diseases are not caused by microbes.
E) Some diseases are noncommunicable.: E) Some diseases are noncommunicable.
6. 6) Which of the following diseases is NOT spread by droplet infection?
A) botulism
B) tuberculosis
C) measles
D) the common cold
E) diphtheria: A) botulism
7. 7) Biological transmission differs from mechanical transmission in that bio-
logical transmission
A) requires an arthropod.
B) involves fomites.
C) involves specific diseases.
D) requires direct contact.
E) works only with noncommunicable diseases.: C) involves specific diseases.
8. 8) Which of the following definitions is INCORRECT?
A) endemic: a disease that is constantly present in a population
B) epidemic: a disease that is endemic across the world
C) pandemic: a disease that affects a large number of people in the world in a
short time
D) sporadic: a disease that affects a population occasionally
E) incidence: number of new cases of a disease: B) epidemic: a disease that is endemic across
the world
9. 9) Focal infections initially start out as
A) sepsis.
