TEST BANK For Medical Parasitology 7th Edition by Ruth
Leventhal & Russell F. Cheadle
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ep
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Chapter 1. Introduction
(All Answers at the End of Every Chapter)
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
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life cycle is referred to as the:
a. Definitive host phase
b. Diagnostic stage
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c. Infective stage
d. Method of infection
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2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
,d. Facultative parasite
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
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5. The host in which the parasite reaches sexual or reproductive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
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c. Reservoir host
d. Transport host
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te
ro
us
,Answer Key for Chapter 1. Introduction
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
life cycle is referred to as the:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
ANS: C
RATIONALE: This is the stage of the life cycle at which the parasite is capable of entering and
Pr
developing within the host. It is a required part of the life cycle of that parasite.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
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2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
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c. Endoparasite
d. Facultative parasite
ANS: C
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RATIONALE: Endoparasites live inside the host. Ectoparasites live on the outside of the host.
Facultative parasites can live as well outside the host as inside the host; host infection usually
occurs accidentally. Other accidental parasites may include parasites that usually infect other
ro
animals.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
us
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
ANS: A
RATIONALE: Zoonosis is an accidental infection with a parasite that usually parasitizes
animals. Endoparasites live inside the host. Ectoparasites live outside the host. Facultative
, parasites can live as well outside the host as inside the host; host infection usually occurs
accidentally.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
Pr
ANS: C
RATIONALE: Reservoir hosts harbor parasites that are also infective for humans. Infections
occur when humans encounter infected animals or infective forms related to that parasite’s life
ep
cycle.
KEY: Introduction: parasite-host relationships | Cognitive level: recall
os
5. The host in which the parasite reaches sexual of reproduction maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
te
c. Reservoir host
d. Transport host
ro
ANS: A
RATIONALE: The definitive host harbors the parasite in its complete form, which promotes
continuance of the parasite’s life cycle. A reservoir host also serves as a definitive host.
us
KEY: Introduction: parasite-host relationships | Cognitive level: recall
Leventhal & Russell F. Cheadle
Pr
ep
os
Chapter 1. Introduction
(All Answers at the End of Every Chapter)
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
te
life cycle is referred to as the:
a. Definitive host phase
b. Diagnostic stage
ro
c. Infective stage
d. Method of infection
us
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
,d. Facultative parasite
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
Pr
5. The host in which the parasite reaches sexual or reproductive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
ep
c. Reservoir host
d. Transport host
os
te
ro
us
,Answer Key for Chapter 1. Introduction
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
life cycle is referred to as the:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
ANS: C
RATIONALE: This is the stage of the life cycle at which the parasite is capable of entering and
Pr
developing within the host. It is a required part of the life cycle of that parasite.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
ep
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
os
c. Endoparasite
d. Facultative parasite
ANS: C
te
RATIONALE: Endoparasites live inside the host. Ectoparasites live on the outside of the host.
Facultative parasites can live as well outside the host as inside the host; host infection usually
occurs accidentally. Other accidental parasites may include parasites that usually infect other
ro
animals.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
us
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
ANS: A
RATIONALE: Zoonosis is an accidental infection with a parasite that usually parasitizes
animals. Endoparasites live inside the host. Ectoparasites live outside the host. Facultative
, parasites can live as well outside the host as inside the host; host infection usually occurs
accidentally.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
4. An animal that harbors a parasite that can also infect humans is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
Pr
ANS: C
RATIONALE: Reservoir hosts harbor parasites that are also infective for humans. Infections
occur when humans encounter infected animals or infective forms related to that parasite’s life
ep
cycle.
KEY: Introduction: parasite-host relationships | Cognitive level: recall
os
5. The host in which the parasite reaches sexual of reproduction maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
te
c. Reservoir host
d. Transport host
ro
ANS: A
RATIONALE: The definitive host harbors the parasite in its complete form, which promotes
continuance of the parasite’s life cycle. A reservoir host also serves as a definitive host.
us
KEY: Introduction: parasite-host relationships | Cognitive level: recall
