. Enterobius vermicularis infection is usuallydiagnosed by findingA. Eggs in perianal specimensB. Larvae in a stool specimenC. Adults in fecesD. Eggs in the feces2. Which organism infects humans by larvalpenetration?A. Enterobius vermicularisB. Ascaris lumbricoidesC. Necator americanusD. Trichuris trichiura3. Which statement is correct for specimencollection and processing?A. Stool samples can contain urine.B. Stools can be frozen without affectingparasitic structure.C. Liquid stools are best for detectingameba and flagellate trophozoites.D. Unpreserved stools can remain at roomtemperature for up to 72 hours.4. For which organism is the trophozoite theinfective stage for humans?A. Endolimax nanaB. Dientamoeba fragilisC. Entamoeba coliD. Giardia duodenalis5. The primary diagnostic specimen for de-tecting infection with Naegleria fowleri is a:A. Thick blood smearB. Corneal scrapingC. Cerebrospinal fluid sedimentD. Skin biopsy6. The host in which sexual reproductiontakes place is called theA. CommensalB. Definitive hostC. Intermediate hostD. Vector
Question
. Enterobius vermicularis infection is usuallydiagnosed by findingA. Eggs in perianal specimensB. Larvae in a stool specimenC. Adults in fecesD. Eggs in the feces2. Which organism infects humans by larvalpenetration?A. Enterobius vermicularisB. Ascaris lumbricoidesC. Necator americanusD. Trichuris trichiura3. Which statement is correct for specimencollection and processing?A. Stool samples can contain urine.B. Stools can be frozen without affectingparasitic structure.C. Liquid stools are best for detectingameba and flagellate trophozoites.D. Unpreserved stools can remain at roomtemperature for up to 72 hours.4. For which organism is the trophozoite theinfective stage for humans?A. Endolimax nanaB. Dientamoeba fragilisC. Entamoeba coliD. Giardia duodenalis5. The primary diagnostic specimen for de-tecting infection with Naegleria fowleri is a:A. Thick blood smearB. Corneal scrapingC. Cerebrospinal fluid sedimentD. Skin biopsy6. The host in which sexual reproductiontakes place is called theA. CommensalB. Definitive hostC. Intermediate hostD. Vector
Solution
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Enterobius vermicularis infection is usually diagnosed by finding: A. Eggs in perianal specimens
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Which organism infects humans by larval penetration? C. Necator americanus
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Which statement is correct for specimen collection and processing? C. Liquid stools are best for detecting ameba and flagellate trophozoites.
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For which organism is the trophozoite the infective stage for humans? B. Dientamoeba fragilis
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The primary diagnostic specimen for detecting infection with Naegleria fowleri is a: C. Cerebrospinal fluid sediment
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The host in which sexual reproduction takes place is called the: B. Definitive host
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