Question 1
Question
Each of the following statements concerning malaria is correct EXCEPT:
Answer
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Release of merozoites from red blood cells causes periodic fever and chills.
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The principal site of gametocyte formation is the human gastrointestinal tract.
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Early in infection, sporozoites enter hepatocytes.
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The female Anopheles mosquito is the vector.
Question 2
Question
Which of the following agent is used to prevent Malaria
Answer
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Mebendazole
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Chloroquine
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Zinc tablet
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Inactivated vaccine
Question 3
Question
Laboratory diagnosis of a patient with a suspected liver abscess due to Entamoeba histolytica should include:
Answer
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Stool examination and indirect hemagglutination test
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Stool examination and blood smear
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Xenodiagnosis and string test
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Indirect hemagglutination test and skin test
Question 4
Question
Infective stage of Entamoeba histolytica is:
Answer
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filariform larvae
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trophozoite
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quadrinucleate cyst
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sporozoite
Question 5
Question
A 30-year-old woman presents to her gynecologist with complaints of vaginal itching and a frothy, yellow discharge. She also complains of painful urination. She admits to being sexually active with several men in the past two weeks. Cultures are negative for bacterial growth, but organisms are visible via a wet preparation on low power. The most likely causal agent is
Answer
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Chlamydia trachomatis
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Giardia lamblia
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Candida albicans
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Trichomonas vaginalis
Question 6
Question
Each of the following parasites has an intermediate host as part of its life cycle EXCEPT:
Answer
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Taenia solium
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Trichomonas vaginalis
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Echinococcus granulosus
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Toxoplasma gondii
Question 7
Question
In malaria, the form of plasmodia that is transmitted from mosquito to human is the:
Answer
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Merozoite
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Hypnozoite
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Sporozoite
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Gametocyte
Question 8
Question
Trophozoites, Schizonts and gametocytes of all the malarial parasites are seen in the peripheral blood smear except;
Answer
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P. ovale
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P. falciparum
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P. vivax
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P. malariae
Question 9
Question
A 35-year-old man comes to the emergency department complaining of high fever, chills, severe headache, and confusion. He has recently returned from Africa. A peripheral blood smear reveals multiple ring structures and crescent-shaped gametes. Which of the following organisms is the most likely cause?
Answer
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Plasmodium falciparum
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Plasmodium malariae
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Plasmodium vivax
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Leishmania species
Question 10
Question
Each of the following statements concerning sleeping sickness is correct EXCEPT:
Question 11
Question
Each of the following statements concerning kala-azar is correct except:
Answer
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Kala-azar is caused by Leishmania donovani
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kala-azar is transmitted by the bite of sandflies
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Kala-azar occurs primarily in rural latin America
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Kala-azar can be diagnosed by finding amastigotes in bone marrow
Question 12
Question
The pathogenic protozoon with extra-intestinal spread through blood is:
Answer
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Giardia Lamblia
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Entamoeba coli
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Isasporabelli
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Entamoeba histolytica
Question 13
Question
Naegleria fowleri infection is diagnosed by:
Answer
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Blood film
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Serological examination
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Lumber puncture
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None of the above
Question 14
Question
Naegleria fowleri is
Question 15
Question
Acanthamoeba species cause:
Question 16
Question
regarding toxoplasmosis in humans:
Answer
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becomes active in immuno-compromised patients
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acute infection could be transmitted from mother to fetus
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associated with cats
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is mainly diagnosed by serological tests
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all of the above
Question 17
Question
oocyst of Toxoplasma is found in:
Question 18
Question
cryptosporidium multiplies in:
Answer
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the lumen of small intestine
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the brush border of epithelial lining of small intestine
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the lumen of large intestine
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non of the above
Question 19
Question
in visceral Leishmaniasis culture of the biopsy material on NNN medium results in :
Question 20
Question
Each of the following statements concerning Trypanosoma cruzi is correct EXCEPT:
Answer
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T. cruzi typically affects heart muscle, leading to cardiac failure.
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T. cruzi occurs primarily in tropical Africa.
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T. cruzi is transmitted by the reduviid bug.
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T. cruzi can be diagnosed by seeing amastigotes in a bone marrow aspirate.