Parasitology Exam

Amoebae, Sporozoans, Ciliates

I.  Identify the organism (20 points)

1.  facultative parasitism, thermal pools of power plants

2.  zoonosis?, robust rings, 72 hour cycle

3.  2 sporocysts/oocyst, feline definitive host

4.  relapses, reticulocytes

5.  cerebral AIDS, microsporidian

6.  monopodial, pathogen, cyst

7.  AIDS, persistent diarrhea, Trichrome stain

8.  turkeys, intestinal epithelia

9.  ticks, red water fever, Texas

10.  zoitocysts, obligately heteroxenous

11.  AIDS, interstitial plasma cell pneumonitis, questionable taxonomy, fungus?

12.  uninucleate, rounded to triangular cyst

13.  clogged capillaries, high parasitemia, recrudescence

14.  pigs, Imelda Marcos, 150 micrometers, colon

15.  self-limiting disease, most pathogenic chicken coccidean

16.  butchers, ELISA, steak tartare

17.  octonucleate, water or food-borne, chromatoidal material

18.  D. F. Losch, glycogen, hepatic abscesses,

19.  Duffy, sporozoites, very active trophozoites

20.  contact lenses, Legionella

II.  There are those who argue that the mosquito is the definitive host of Plasmodium as well as those who argue that man is the definitive host.  Explain what definitive and intermediate hosts are and detail the evidence to support each point of view. (15 points). 

III.  Name the stage in the life cycle which precedes and the stage which follows the:

                                                                precedes                                               follows

1.  tachyzoite of Toxoplasma gondii

2.  gametogony in Eimeria

3.  sporozoites of Plasmodium

4.  trophozoite of Monocystis lumbrici

5.  oocysts of Sarcocystis.

IV.  Make a detailed, labeled drawing of the following: (10 points)

1.  Eimeria oocyst

2.  Dientamoeba fragilis trophozoite

3.  Plasmodium malariae schizont

4.  Toxoplasma gondii oocyst

5.  Entamoeba histolytica immature cyst