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Microbiology: Unit 4
 This page was last updated on 15-Jun-02

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 Self-Tests - Microbiology:
Parasitic Diseases
C
hoose the best answer for each question.  At the end of the quiz, click on the "Get Score" button and your quiz will automatically be graded.  The correct reponses will appear in the box underneath your score.

This test has 30 questions and covers the life cycle of parasitic protozoans, platyhelminths and round worms, as well as the pathophysiology of the diseases they cause.  It is the fourth of five units in the Microbiology section.  Good luck!

1. The classification of protozoans that moves via pseudopods is:
Sarcodinas
Flagellates
Ciliates
Sporozoans

2. The common name for Platyhelminthes is:
Round worms
Pin worms
Hook worms
Flat worms

3. Entamoeba histolytica is infective in the:
Troph stage
Cyst stage
Metacercaria stage
Cysticercus stage

4. What is the number one cause of water-borne diarrhea worldwide?
Trichomonas vaginalis
Giardia lamblia
Entamoeba histolytica
Cryptosporidium parvum

5. Infection with which of the following increases your risk for HIV?
Pneumocystis carinii
Trichomonas vaginalis
Clonorchis sinesis
Fasciola hepatica

6. Which of the following is endemic in daycare centers and can cause growth failure in children under the age of 5?
Ascaris lumbricoides
Enterobius vermicularis
Taenia solium
Giardia lamblia

7. Trypanosoma rhodesiense is transmitted by:
The bite of a female Anopheles mosquito
The bite of a Tsetse fly
Drinking from fresh water streams contaminated with animal fecal matter
Inhaled respiratory secretions

8. Trypanosoma rhodesiense moves by:
Undulating membrane
Pseudopods
Cilia
No means of independent locomotion

9. The largest of the parasitic protozoans, and the ONLY ciliated protozoan which causes human disease, is:
Plasmodium
Balantidium coli
Entamoeba histolytica
Toxoplasma gondii

10. Which of the following is NOT an infective stage of Toxoplasma gondii?
Troph
Cyst
Oocyst
Ootroph

11. Which of the following is an intracellular parasite?
Ancyclostoma canium
Pneumocystis carinii
Schistosoma mansoni
Toxoplasma gondii

12. Which of the following has been classified as a fungi, but it also seen as a protozoan?
Balantidium coli
Pneumocystis carinii
Trypanosoma rhodesiense
Giardia lamblia

13. Which of the following is NOT true of Plasmodium?
Reproduces asexually inside of red blood cells
Causes an irregular pattern of fever and chills
High risk groups include migrant workers and refugees
Causes 500 million acute clinical cases per year

14. Cryptosporidium parvum causes:
Gastroenteritis
Dysentary
Urinary tract infection
Parvo

15. In the human body, Clonorchis sinensis lives in:
The bile ducts, gallbladder and pancreas
The hepatic portal
The lymph nodes and tissue
The intestinal tract

16. What is the first intermediate host of Clonorchis sinensis?
Humans
Snails
Freshwater fish
Sheep and cattle

17. What is the definitive host of Fasciola hepatica?
Sheep, cattle and humans
Freshwater fish
Pigs
Cats

18. Which stage of Schistosoma mansoni enters the bloodstream, finds its way to the hepatic portal veins and feeds on blood?
Miracidium
Cercaria
Metacercaria
Sporocysts

19. The head of a tapeworm is called:
The proglottid
The cysticercus
The scolex
The apex

20. Taenia saginata:
Absorbs large quantities of nutrients, leading to malnourishment in humans
Impede or block the passage of materials through the intestines
Is transmitted when humans eat "measly beef"
All of the above

21. Humans can get Taenia solium (the pork tapeworm) by:
Ingesting the cysticercus
Eating the ova
Both A and B
Neither A nor B

22. Hyatid disease is caused by:
Taenia solium
Echinococcus granulosus
Enterobius vermicularis
Trichuris trichiura

23. Enterobius vermicularis causes _____ infestation.
Pin worm
Hook worm
Ring worm
Whip worm

24. Ascaris lumbricoides:
Causes Ascaris pneumonia when in the lung tissue
Causes malnutrition
Causes allergic reactions by releasing toxic wastes
All of the above

25. Hook worms get into the body:
When humans ingest infected, undercooked pork
When humans drink unclean water
Through openings in the skin
Through unbroken skin

26. Encysted larvae of Trichinella spiralis is found in the _____ of pork.
Skeletal muscle
Intestines
Fatty tissue
All of the above

27. How can you kill Giardia lamblia?
Add a double dose of iodine to the water
Boil water for 3 to 5 minutes
Both A and B
Neither A nor B

28. The late stages of Trypanosoma rhodensiense are treated with:
Flagyl
Arsenic
Suramin
Convalescent serum

29. The diagnosis of Trichuris trichiura is made:
By observing eggs in the feces
By observing trophs in the feces
By blood smear
With an ELISA test

30. Trichinella spiralis is diagnosed by:
Blood smear
Observing eggs in the feces
Symptoms only
Tissue biopsy

Score =
Correct answers:


                   
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