Parasitology. Exam

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1. A person can aquire toxoplasmosis from:

Oocyst in air
Pseudocyst in raw meat
Cleaning out the cat litter box
All of these


2. All different forms of Toxoplasma gondii can be present in the body of:

Bird
Human
Cat
Mice


3. A protozoan cyst that contains four nuclei should be identified as:

Giardia lamblia
Trichomonas vaginalis
Trypanosoma
Toxoplasma gondii


4. All of the following organisms NOT tends to cause diarrhea:

Cryptosporidium
Trichomonas vaginalis
Giardia lamblia
Entamoeba histotytica


5. Parasitic organisms that may be sexually transmitted include:

Cryptosporidium
Trichomonas vaginalis
Giardia lamblia
Entamoeba histotytica


6. The specimen that is LEAST LIKELY to provide recovery of Trichomonas vaginalis is:

Urine
Urethral discharge
Prostatic discharge
Feces


7. What is the primary cause of Amebiasis?

Giardia lamblia
Entamoeba histolytica
Toxoplasma gondii
Cystoisospora belli


8. Where is the highest occurrence of amebiasis found?

Europe
Desert regions
Russia
Tropical regions


9. Which of the recognized groups of protozoans lack typical organelles for movement?

Flagellates
Amoebas
Apicomplexans
Ciliates


10. What aree the vectors of Leishmania?

Cats
Dogs
Mosquitoes
Rodents


11. Which of the following statements concerning Ascaris lumbricoides is NOT correct?

Both dogs and cats are intermediate host of Ascaris lumbricoides
Ascaris lumbricoides is transmitted by ingestion of eggs
Ascaris lumbricoides can cause pneumonia
Ascaris lumbricoides is one of the largest nematode


12. In malaria, the form of plasmodia that is transmitted from mosquito to human is the:

Sporozoite
Gametocyte
Merozoite
Hypnozoite


13. Mosquitoes are the vector in the following diseases:

Visceral leishmaniasis
Onchocerciasis
Bancroftian filariasis
African trypanosomiasis


14. The vector of Brugia malayi is:

Tissue
Mosquito
Continuous nuclei at the tip of the tail
Microfilaria in blood and lymphatic aspirate smears


15. The vector of Loa loa is:

Filariasis or Elephantiasis
Horseflies
Mosquitoes
Bugs


16. Onchocerca volvulus is transmitted by:

River blindness
Tissue
Larvae enters bite site
Blood


17. Calabar swellings are produced by:

Microfilaria in blood and lymphatic aspirate smears
River blindness
A transient swelling of subcutaneous tissues seen in infections with the filarial nematode Loa Loa
Blood and lyphatic fluid


18. What is the mode of transmission of Loa loa and Onchocerca volvulus?

Tissue
Microfilaria in blood smear
Larvae enters bite site
Guinea worm or Fiery serpent


19. For the host, the most dangerous relationship with another organism is:

Commensalism
Mutualism
Parasitism
Symbiosis


20. Protozoa:

Are mostly parasitic
Are completely resistant to chemotherapy
Are mostly visible to the naked eye
Can infect insects


21. The term ectoparasites includes:

Some insects
Some viruses
Some bacteria
Some protozoa


22. What is the most prevalent protozoan disease in the world?

Amebiasis
Giardiasis
Malaria
Trypanosomiasis


23. What is the intermediate host for the schistosomes?

Soil
Blood-sucking insects
Snails
Raw sewage


24. What helminthic infection results in elephantiasis?

Teniasis
Schistosomiasis
Whipworm infection
Bancroftian filariasis

25. This protozoan parasite in a blood sample is:

Acanthamoeba
Giardia duodenalis
Trypanosoma
Cryptosporidium


26. Protozoal disease:

Is generally acute (short-lived)
Is commonest in the tropics
Is only seen in immunodeficient individuals
Is seldom fatal


27. Which helminth is parasite of the cow?

Taenia saginata
Taenia solium
Trichinella spiralis
Ascaris lumbricoides


28. The bed bug is:

Sarcoptes scabiei
Cimex lectularius
Pediculus humanus
Triatoma


29. Chagas disease is transmitted by:

Sarcoptes scabiei
Cimex lectularius
Pediculus humanus
Triatoma


30. The knowledge of parasites is important for:

Humans
Cattle
Environment
All above


31. Fungus parasitism of interest in agriculture is:

Viscum
Rafflesia
Cordyceps
Cuculus


32. Sanitary important arthropod ectoparasites:

Are mainly important as triggers of allergy
Transmit only virus infections
Transmit only bacterial infections
Are mainly important as disease vectors


33. The term proglottid is only used when referring to the:

Turbellaria
Trematoda
Annelids
Cestodes


34. Which one of the following taxa has an ectoparasitic life cycle?

Turbellaria
Trematoda
Annelids
Cestodes


35. Macracanthorhynchus hirudinaceus belongs to phylum:

Acanthocephala
Platyhelminthes
Nematoda
Annelida


36. The hydatid cyst is produced by:

Trichuris trichiura
Strongyloides stercoralis
Echinococcus granulosus
Clonorchis sinensis


37. Malaria is a disease caused by the genus Plasmodium, the vector are:

Horseflies
Flies
Mosquitoes
Bugs

38. This worm parasite belongs to genus:

Ascaris
Trichuris
Trichinella
Taenia


39. Myasis is produced by:

Horseflies
Flies
Mosquitoes
Bugs


40. The Emery's Rule is related to:

Ectoparasitism
Endoparasitism
Kleptoparasitism
Brood parasitism


41. Each of the following statements concerning Malaria is correct except:

The principal site of gametocyte formation is the human gastrointestinal tract
The cause is the protozoo Trypanosoma
Early infection, sporozoites enter hepatocytes
The female anopheles mosquito is the vector


42. Each of the following parasite is transmitted by true mosquitoes except:

Wuchereria bancrofti
Plasmodium falciparum
Brugia malayi
Leishmania donovani

43. In this muscle tissue, what parasite does it appear?

Brugia malayi
Loa loa
Trichinella spiralis
Onchocerca volvulus


44. The Ziehl–Neelsen stain uses:

Sulfuric acid
Carbol Fuchsin
Alcohol
All above


45. Parasite that mostly feed themselves by sucking blood is known as:

Host
Agent
Ectoparasite
Endoparasite


46. The common cuckoo is an example of:

Ectoparasite
Endoparasite
Brood parasite
Kleptoparasite


47. Entamoeba histolytica invades the:

Lungs
Liver
Small intestine
Colon


48. All different forms of Toxoplasma gondii can be present in the body of:

Cat
Human
Mice
Cow


49. Flask shaped ulcers in human intestine are related to:

Giardia
Trichomonas
Cryptosporidium
Amoeba


50. Which parasitic form is related to congenital toxoplasmosis?

Tachyzoite
Trophozoitebr
Oocyst
Tissue cyst


51. Which are the components of Wright's stain?

Eosin Y
Azure B
Methylene blue
All above


52. The Black Death in Medieval Europe was transmited trough:

Lice
Fleas
Mosquitoes
Bedbugs


53. Ancylostomiasis is caused by Ancylostoma duodenale and:

Stronglyoides stercoralis
Necator americanus
Strongyloides stercoralis
Toxocara canis


54. The enterobiasis is caused by:

Necator americanus
Ascaris lumbricoides
Enterobius vermicularis
Trichinella spiralis


55. The tsetse fly belongs to the genus:

Glossina
Stomoxys
Wohlfahrtia
Sarcophaga


56. The stable fly belongs to the genus:

Glossina
Stomoxys
Wohlfahrtia
Sarcophaga


57. Which of these vegetables is NOT a parasite?

Viscum
Santalales
Cuscuta
All are parasites


58. How do humans acquire trichinosis?

By insects
By eating the uncooked meat of an infected animal
By frequent contact with a pig's fur, paws, and tongue
By areas where cats or dogs have defecated


59. Identify which of the listed parasites is not an ectoparasite:

Fleas
Ticks
Roundworms
Mites


60. The order Hemiptera contains:

Bed bugs
Mantids
Crickets
Sucking lice

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