PARASITOLOGY LECTURE EXAM II

FALL 1997

I.    Identify (genus & species)  40 points

01.  no cyst, Endamoebidae

02.  opportunistic, apical complex, zoonosis from cattle

03.  temperate zones, reticulocytes

04.  AIDS, polio/rabies mimic

05.  quadrinucleate cyst, 6-12 micrometers

06.  hyponozites, tropical, oval schizont

07.  facultative, quinghaosu

08.  ticks, Texas

09.  obligately heteroxenous, zoitocyst, dogs and cattle

10.  pig farmers, colon

11.  explosive pseudopodium, Amoeba coli

12.  zoonosis (?), low parasitemia, rosette schizonts

13,  4 sporocysts per oocyst, turkeys

14.  corneal ulcers, facultative

15.  AIDS, 2 sporocysts per oocyst

16.  microsporidian, dysentery

17.  kidney-shaped glycogen mass, uninucleate cyst

18.  Tunisia, intestinal schizogeny, felines

19.  recrudescence, 8-32 merozoites

20.  glycogen vacuole in binucleate cyst

II.  Draw the following (make your drawings large enough to label).  (10 points)

1.  Plasmodium spp. sporozoite

2.  Isospora spp. oocyst

3.  Iodamoeba butschlii cyst

4.  Plasmodium falciparum gametocyte

5.  Entamoeba histolytica cyst

III.  Discuss the difference between a relapse and a recrudescence in Plasmodium.  Which species have relapses/recrudescences?  What is the evolutionary value of these events?  (15 points)

IV.  Briefly discuss five epidemiological factors relating to infections with:  (15 points)

Plasmodium vivax

Toxoplasma gondii

Entamoeba histolytica

V.  Explain fully what the following terms mean or describe.  (10 points)

1.  self-limiting disease

2.  amoeboma

3.  premunition

4.  prophylaxis

5.  quotidian periodicity

VI.  Discuss acquired and genetic immunity as it applies to Plasmodium.  (10 points)