Biology 545
HUMAN PARASITOLOGY
Sample exam

Please note: A species is binomial.

1. Please write in the name of an appropriate species. Some questions may have more than one answer, but please just give 1 representative species. You may use an answer more than once (2 points each; 30 points total).
   1. Amoeba cysts with 8-16 nuclei.

   2. 60% binucleate amoebic trophozoites.

   3. Duffy antigen.

   4. 2 sporocysts in oocyst.

   5. 8 merozoites average in segmenter.

   6. Variable surface glycoproteins.

   7. A relapsing malaria.

   8. Always infects lungs.

   9. RNA editing.

   10. Infects the urogenital tract.

   11. Macronucleus.

   12. Large glycogen vacuole in cyst.

   13. Blackwater fever.

   14. Hepatic abcesses.

   15. Only invades reticulocytes.

   
   

2. Please provide the common name of the intermediate host (IH), definitive host (D), or vector (V) for each of the following protozoa (2 points each, 10 points total).
   1. Sarcocystis hominis IH

   2. Toxoplasma gondii D

   3. Leishmania donovani V

   4. Isospora belli D

   5. Babesia bigemina V

   
   

3. Please provide the site of infection for each of the following protozoa (2 points each, 10 points total).

   1. Naegleria fowleri

   2. Giardia lamblia

   3. Cryptosporidium parvum

   4. Balantidium coli

   5. Plasmodium ovale

   
   

4. Please list 5 characteristics that can be used in distinguishing the different species of intestinal amoebae apart (2 points each, 10 points total).

   1. ..

   2. ..

   3. ..

   4. ..

   5. ..

   
   

5. True or false (1 point each, 10 points total).
   1. Plasmodium vivax occasionally exists in the United States.

   2. Plasmodium falciparum only invades reticulocytes.

   3. Toxoplasma gondii is a significant pathogen of AIDS patients.

   4. Entamoeba histolytica grows well at room temperature and with high oxygen.

   5. Penicillin is highly effective at eliminating Naegleria fowleri.

   6. In addition to humans, Balantidium coli also infects pigs.

   7. Trypanosoma cruzi causes significant morbidity and mortality in populations along the lower Rio Grande valley in Texas.

   8. The primary vectors of Leishmania in Oklahoma and Texas are reduviids.

   9. Home made saline solutions are highly effective in eliminating Acanthamoeba spp. trophozoites.

   10. Cryptosporidium parvum is easily eliminated with metronidazole.

   
   

6. Please provide the complete life cycle of Toxoplasma gondii. Label all stages (10 points).

   
   

   
   

   
   

7. Name 2 morphologic features that distinguish Pentatrichomonas hominis and Trichomonas vaginalis. Be specific (2 points each, 4 points total).

   1. ..

   2. ..

   
   

8. Draw a trypomastigote, epimastigote, and promastigote. Carefully label the nucleus, kinetoplast, flagellum, and undulating membrane of each to show differences and similarities (2 points each, 6 points total).

   1. ..

      
      

   2. ..

      
      

   3. ..

   
   

9. Please provide the complete life cycle of Trypanosoma gambiense. Label all stages (10 points).