Parasitology Exam I Questions And Answers
You have received a preserved fecal specimen in the laboratory, but are unable to examine it
immediately. What should you do with the fecal specimen?
A. Freeze at -140 C
B. Incubate at 37 C
C. Keep at room temp
D. Refrigerate it C. Keep at room temp
...
You have received a preserved fecal specimen in the laboratory, but are unable to examine it
immediately. What should you do with the fecal specimen?
A. Freeze at -140 C
B. Incubate at 37 C
C. Keep at room temp
D. Refrigerate it C. Keep at room temp
Primary amoebic encephalitis may be caused by which of the following:
A. Endolimax nana
B. Acanthamoeba
C. Echinococcus granulosus
D. Naegleria species D - naegleria species
Duodenal aspirates and the Entero-Test are used most often to recover:
A. Entamoeba histolytica
B. Dientamoeba fragilis
C. Giardia lamblia
, Parasitology Exam I Questions And Answers
D. Chilomastix mesnili C. Giardia lamblia
Infection with Naegleria may be detected by examining which of the following specimens:
A. CSF
B. Blood
C. Fecal material
D. Urine CSF
Specimens suspected of containing protozoans and flagellates should be transported to the
laboratory in:
A. Saline
B. Zinc sulfate
C. Ether
D. Polyvinyl alcohol D. PVA
Which of the following is used to describe the trophozoites of Entamoeba histolytica?
A. Generally the same size as those of E. coli
B. Usually contain more than one nucleus
, Parasitology Exam I Questions And Answers
C. Eccentric karyosome
D. Cytoplasm always contains ingested RBCs D - cytoplasm always contains ingested
RBCs
A 12 YO boy was seen in the ER complaining of neck rigidity and severe headache. He spent the
previous week swimming in a neighbors pond. A spinal tap was performed and the specimen was
sent to the lab. Direct Exam of the CSF revealed motile ameoba. This organism is most likely:
A. E. Histolytica
B. Giardia lamblia
C. Naegleria fowleri
D. Dientamoeba fragilis C- Naegleria fowleri
A weak iodine solution will destroy which of the following parasitic forms?
A. Protozoan cysts
B. Motile trophozoites
C. WBCs
D. Motile larvae B. Motile trophs
, Parasitology Exam I Questions And Answers
While on a trip to Mexico City, a 38 YO man developed bloody diarrhea and abdominal pain. A
fecal specimen was sent to the laboratory. CBC revealed an increase in eosinophils. What is the
first procedure that should be performed by the parasitologist?
a. Direct saline wet mount
b. Gram stain
c. ELISA to detect the presence of Giardia Lamblia
d. Direct iodine wet mount a. Direct saline wet mount
The organism detected in the specimen from the previous patient had directional motility, 21 um
in length, and had a single nucleus. The troph is most likely
a. Entamoeba coli troph
b. Dientamoeba fragilis cyst
c. Entamoeba histolytica troph
d. Giardia lamblia troph c. Entamoeba histolytica troph
What is the most important characteristic used to differentiate the human intestinal amoeba?
a. Size and shape of chromatoid bodies
b. Trophozoite motility
c. Structure of the nucleus
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