Parasitology Final Exam Review
Questions With Correct Answers
The peripheral chromatin pattern of the nucleus of Entamoeba
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histolytica is: - ANSWER✔✔✔-evenly distributed
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Which tissue-invading protozoan causes severe destruction of CNS
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tissue and has both amebic and flagellated morphological forms at
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some point in its life cycle? - ANSWER✔✔✔-Naegleria fowleri
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Cysts of Entamoeba histolytica have: - ANSWER✔✔✔-one to four nuclei
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The largest protozoan known to parasitize man is: - ANSWER✔✔✔-
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Balantidium coli |
In the urban setting, Cryptosporidium is usually found in patients with: -
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ANSWER✔✔✔-AIDS
Sporogony is: - ANSWER✔✔✔-sexual reproduction
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,In the trichrome stain, if the Histoclear contains water, the finished
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slides will: - ANSWER✔✔✔-not be clear and will appear cloudy or milky
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If fecal specimens are to be preserved for the preparation of permanent
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slides, what would be the preservative of choice? - ANSWER✔✔✔-PVA
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(Polyvinyl Alcohol) |
Which specimen is the LEAST likely to provide recovery of Trichomonas
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vaginalis? - ANSWER✔✔✔-feces | |
In what suspected condition should a wet prep using a warm slide be
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examined? - ANSWER✔✔✔-Amoebic meningoencephalitis | | |
An unpreserved fecal specimen has been accidentally left at room
| | | | | | | | | |
temperature in the laboratory overnight. Upon examination the next | | | | | | | | |
day, you find many motile "larvae" which measure about 250 and have
| | | | | | | | | | | |
short buccal capsules and prominent genital primordium, but no ova are
| | | | | | | | | |
found. Identification of this organism is: - ANSWER✔✔✔-Strongyloides
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stercoralis, rhabditiform larva | |
The use of the trichrome stained smear in parasitology is advantageous
| | | | | | | | | | |
in that it best demonstrates the details of the _________ stage which
| | | | | | | | | | | |
may not be seen as easily in other microscopic preparations -
| | | | | | | | | | |
ANSWER✔✔✔-trophozoite
, Which of the following animals acts as a reservoir of infection of
| | | | | | | | | | | |
Balantidium coli? - ANSWER✔✔✔-pigs | | |
A cyst of Iodamoeba butschlii would typically show: - ANSWER✔✔✔-a
| | | | | | | | | |
glycogen mass |
Bloody, diarrheic stools would most likely contain which of the following
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parasites? - ANSWER✔✔✔-Entamoeba histolytica
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The most characteristic feature of Endolimax nana it its: -
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ANSWER✔✔✔-blot-like nucleus and clear cytoplasm | | | |
Organisms that should be considered in a waterborne outbreak of
| | | | | | | | | |
diarrheal disease include: - ANSWER✔✔✔-Giardia lamblia and
| | | | | | |
Cryptosporidium parvum |
Which of the following is the BEST technique to identify Dientamoeba
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fragilis in stool? - ANSWER✔✔✔-Trichrome stained smear
| | | | | |
Eye infections with Acanthamoeba spp. have most commonly been
| | | | | | | | |
traced to: - ANSWER✔✔✔-use of contaminated lens cleaning solutions
| | | | | | | |
A host in which a parasite does not reach its sexual maturity and
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reproduction is a/an - ANSWER✔✔✔-Intermediate host
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Questions With Correct Answers
The peripheral chromatin pattern of the nucleus of Entamoeba
| | | | | | | | |
histolytica is: - ANSWER✔✔✔-evenly distributed
| | | |
Which tissue-invading protozoan causes severe destruction of CNS
| | | | | | | |
tissue and has both amebic and flagellated morphological forms at
| | | | | | | | | |
some point in its life cycle? - ANSWER✔✔✔-Naegleria fowleri
| | | | | | | |
Cysts of Entamoeba histolytica have: - ANSWER✔✔✔-one to four nuclei
| | | | | | | | |
The largest protozoan known to parasitize man is: - ANSWER✔✔✔-
| | | | | | | | |
Balantidium coli |
In the urban setting, Cryptosporidium is usually found in patients with: -
| | | | | | | | | | | |
ANSWER✔✔✔-AIDS
Sporogony is: - ANSWER✔✔✔-sexual reproduction
| | | |
,In the trichrome stain, if the Histoclear contains water, the finished
| | | | | | | | | | |
slides will: - ANSWER✔✔✔-not be clear and will appear cloudy or milky
| | | | | | | | | | |
If fecal specimens are to be preserved for the preparation of permanent
| | | | | | | | | | | |
slides, what would be the preservative of choice? - ANSWER✔✔✔-PVA
| | | | | | | | | |
(Polyvinyl Alcohol) |
Which specimen is the LEAST likely to provide recovery of Trichomonas
| | | | | | | | | | |
vaginalis? - ANSWER✔✔✔-feces | |
In what suspected condition should a wet prep using a warm slide be
| | | | | | | | | | | | |
examined? - ANSWER✔✔✔-Amoebic meningoencephalitis | | |
An unpreserved fecal specimen has been accidentally left at room
| | | | | | | | | |
temperature in the laboratory overnight. Upon examination the next | | | | | | | | |
day, you find many motile "larvae" which measure about 250 and have
| | | | | | | | | | | |
short buccal capsules and prominent genital primordium, but no ova are
| | | | | | | | | |
found. Identification of this organism is: - ANSWER✔✔✔-Strongyloides
| | | | | | | | |
stercoralis, rhabditiform larva | |
The use of the trichrome stained smear in parasitology is advantageous
| | | | | | | | | | |
in that it best demonstrates the details of the _________ stage which
| | | | | | | | | | | |
may not be seen as easily in other microscopic preparations -
| | | | | | | | | | |
ANSWER✔✔✔-trophozoite
, Which of the following animals acts as a reservoir of infection of
| | | | | | | | | | | |
Balantidium coli? - ANSWER✔✔✔-pigs | | |
A cyst of Iodamoeba butschlii would typically show: - ANSWER✔✔✔-a
| | | | | | | | | |
glycogen mass |
Bloody, diarrheic stools would most likely contain which of the following
| | | | | | | | | |
parasites? - ANSWER✔✔✔-Entamoeba histolytica
| | | |
The most characteristic feature of Endolimax nana it its: -
| | | | | | | | | |
ANSWER✔✔✔-blot-like nucleus and clear cytoplasm | | | |
Organisms that should be considered in a waterborne outbreak of
| | | | | | | | | |
diarrheal disease include: - ANSWER✔✔✔-Giardia lamblia and
| | | | | | |
Cryptosporidium parvum |
Which of the following is the BEST technique to identify Dientamoeba
| | | | | | | | | | |
fragilis in stool? - ANSWER✔✔✔-Trichrome stained smear
| | | | | |
Eye infections with Acanthamoeba spp. have most commonly been
| | | | | | | | |
traced to: - ANSWER✔✔✔-use of contaminated lens cleaning solutions
| | | | | | | |
A host in which a parasite does not reach its sexual maturity and
| | | | | | | | | | | | |
reproduction is a/an - ANSWER✔✔✔-Intermediate host
| | | | |
