Quiz
Protozoa
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Perguntas do quiz (20)
1Each of the following statements concerning malaria is correct EXCEPT:
- ARelease of merozoites from red blood cells causes periodic fever and chills.
- BThe principal site of gametocyte formation is the human gastrointestinal tract.
- CEarly in infection, sporozoites enter hepatocytes.
- DThe female Anopheles mosquito is the vector.
2Which of the following agent is used to prevent Malaria
- AMebendazole
- BChloroquine
- CZinc tablet
- DInactivated vaccine
3Laboratory diagnosis of a patient with a suspected liver abscess due to Entamoeba histolytica should include:
- AStool examination and indirect hemagglutination test
- BStool examination and blood smear
- CXenodiagnosis and string test
- DIndirect hemagglutination test and skin test
4Infective stage of Entamoeba histolytica is:
- Afilariform larvae
- Btrophozoite
- Cquadrinucleate cyst
- Dsporozoite
5A 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
- AChlamydia trachomatis
- BGiardia lamblia
- CCandida albicans
- DTrichomonas vaginalis
6Each of the following parasites has an intermediate host as part of its life cycle EXCEPT:
- ATaenia solium
- BTrichomonas vaginalis
- CEchinococcus granulosus
- DToxoplasma gondii
7In malaria, the form of plasmodia that is transmitted from mosquito to human is the:
- AMerozoite
- BHypnozoite
- CSporozoite
- DGametocyte
8Trophozoites, Schizonts and gametocytes of all the malarial parasites are seen in the peripheral blood smear except;
- AP. ovale
- BP. falciparum
- CP. vivax
- DP. malariae
9A 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?
- APlasmodium falciparum
- BPlasmodium malariae
- CPlasmodium vivax
- DLeishmania species
10Each of the following statements concerning sleeping sickness is correct EXCEPT:
- ASleeping sickness can be diagnosed by finding eggs in the stool.
- BSleeping sickness is transmitted by tsetse flies.
11Each of the following statements concerning kala-azar is correct except:
- AKala-azar is caused by Leishmania donovani
- Bkala-azar is transmitted by the bite of sandflies
- CKala-azar occurs primarily in rural latin America
- DKala-azar can be diagnosed by finding amastigotes in bone marrow
12The pathogenic protozoon with extra-intestinal spread through blood is:
- AGiardia Lamblia
- BEntamoeba coli
- CIsasporabelli
- DEntamoeba histolytica
13Naegleria fowleri infection is diagnosed by:
- ABlood film
- BSerological examination
- CLumber puncture
- DNone of the above
14Naegleria fowleri is
- APermanent parasite of man
- BFree living amoeba
- CNon pathogenic
- DFound in running water stream
15Acanthamoeba species cause:
- Achronic primary meningoencephalitis
- Bkeratitis with blindness
- Cgranuloma of internal organs
- Dall of the above
16regarding toxoplasmosis in humans:
- Abecomes active in immuno-compromised patients
- Bacute infection could be transmitted from mother to fetus
- Cassociated with cats
- Dis mainly diagnosed by serological tests
- Eall of the above
17oocyst of Toxoplasma is found in:
- Ahuman tissue
- Bthe brain of chronic patients
- Cfaeces of infected cat
- Dall of the above
18cryptosporidium multiplies in:
- Athe lumen of small intestine
- Bthe brush border of epithelial lining of small intestine
- Cthe lumen of large intestine
- Dnon of the above
19 in visceral Leishmaniasis culture of the biopsy material on NNN medium results in :
- Aamastigote form
- BLeptomonas form (promastigote)
- CEpimastigote form
- DLeishmania form
20Each of the following statements concerning Trypanosoma cruzi is correct EXCEPT:
- AT. cruzi typically affects heart muscle, leading to cardiac failure.
- BT. cruzi occurs primarily in tropical Africa.
- CT. cruzi is transmitted by the reduviid bug.
- DT. cruzi can be diagnosed by seeing amastigotes in a bone marrow aspirate.
Informações
- Descrição
- MCQ for 3rd year medical students
- Autor
- Nada Medhat
- Idioma
- English
- Visualizações
- 237
- Histórico
- Criado em 16 nov 2018 · atualizado em 16 nov 2018
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