Parasitology Exam I Questions With 100% Correct Answers 2024

Parasitology Exam I Questions With 100% Correct Answers 2024 Which of the following flagellates cause disease in the intestinal tract? A. Trichomonas hominis B. Trichomonas vaginalis C. Giardia lamblia D. Chilomastix mesnili - answerC. Giardia lamblia The direct iodine preparation is best used to identify which of the following? A. Protozoan trophs B. Protozoan cysts C. Helminth eggs D. Rhabditiform larvae - answerB. Protozoan cysts 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 - answerC. 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 - answerD - naegleria species Duodenal aspirates and the Entero-Test are used most often to recover: A. Entamoeba histolytica B. Dientamoeba fragilis C. Giardia lamblia D. Chilomastix mesnili - answerC. Giardia lamblia Infection with Naegleria may be detected by examining which of the following specimens: A. CSF B. Blood C. Fecal material D. Urine - answerCSF Specimens suspected of containing protozoans and flagellates should be transported to the laboratory in: A. Saline B. Zinc sulfate C. Ether D. Polyvinyl alcohol - answerD. 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 C. Eccentric karyosome D. Cytoplasm always contains ingested RBCs - answerD - 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 - answerC- 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 - answerB. Motile trophs 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 - answera. Direct saline wet mount The organism detected in the specimen from the prev