Test Bank: Medical Parasitology, 7th
Edition (Leventhal & Cheadle) Format:
Multiple Choice COMPLETE EXAM
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
Answer: C
Rationale: This is the stage of the life cycle at which the parasite
is capable of entering and developing within the host. It is a
required part of the life cycle of that parasite.
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
,Answer: C
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.
3. Zoonosis is a term used to describe humans' relationship
with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
Answer: A
Rationale: Zoonosis is an accidental infection with a parasite that
usually parasitizes animals. Endoparasites live inside the host.
Ectoparasites live outside the host.
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
,Answer: 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 cycle.
5. The host in which the parasite reaches sexual or
reproductive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
Answer: A
Rationale: The definitive host harbors the parasite in its complete
form, which promotes continuance of the parasite's life cycle.
6. Which of the following are included in the study of
parasitology?
a. Bacteria
b. Viruses
c. Protozoa
d. Worms
e. Fungi
f. Insects
g. C, D, E, F
h. All of the above
, Answer: G (Protozoa, worms, fungi, insects)
Rationale: Parasitology is the study of parasites, which
traditionally includes protozoa, helminths (worms), and
arthropods (insects and arachnids) that are of medical importance.
Bacteria and viruses are not considered parasites in the classical
parasitological sense and are studied in microbiology and
virology.
7. Which of the following microorganisms do NOT contain a
nucleus?
a. Bacteria
b. Viruses
c. Protozoa
d. Worms
e. Fungi
f. Insects
g. C, D, E, F
h. A and B
i. All of the above
Answer: H (Bacteria and viruses)
Rationale: Bacteria are prokaryotes and lack a true nucleus.
Viruses are acellular and do not have a nucleus. Protozoa, worms,
fungi, and insects are all eukaryotic and contain a nucleus.
Edition (Leventhal & Cheadle) Format:
Multiple Choice COMPLETE EXAM
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
Answer: C
Rationale: This is the stage of the life cycle at which the parasite
is capable of entering and developing within the host. It is a
required part of the life cycle of that parasite.
2. A parasite that lives inside a host is referred to as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
,Answer: C
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.
3. Zoonosis is a term used to describe humans' relationship
with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
Answer: A
Rationale: Zoonosis is an accidental infection with a parasite that
usually parasitizes animals. Endoparasites live inside the host.
Ectoparasites live outside the host.
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
,Answer: 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 cycle.
5. The host in which the parasite reaches sexual or
reproductive maturity is referred to as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
Answer: A
Rationale: The definitive host harbors the parasite in its complete
form, which promotes continuance of the parasite's life cycle.
6. Which of the following are included in the study of
parasitology?
a. Bacteria
b. Viruses
c. Protozoa
d. Worms
e. Fungi
f. Insects
g. C, D, E, F
h. All of the above
, Answer: G (Protozoa, worms, fungi, insects)
Rationale: Parasitology is the study of parasites, which
traditionally includes protozoa, helminths (worms), and
arthropods (insects and arachnids) that are of medical importance.
Bacteria and viruses are not considered parasites in the classical
parasitological sense and are studied in microbiology and
virology.
7. Which of the following microorganisms do NOT contain a
nucleus?
a. Bacteria
b. Viruses
c. Protozoa
d. Worms
e. Fungi
f. Insects
g. C, D, E, F
h. A and B
i. All of the above
Answer: H (Bacteria and viruses)
Rationale: Bacteria are prokaryotes and lack a true nucleus.
Viruses are acellular and do not have a nucleus. Protozoa, worms,
fungi, and insects are all eukaryotic and contain a nucleus.
