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    • 1 Post By Lennie Fasano

    Thread: Parasitology MCQs

    1. #1
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      Lightbulb Parasitology MCQs


      1- The pathogenic protozoon with extra-intestinal spread through blood is:
      a. Giardia Lamblia
      b. Entamoeba coli
      c. Isasporabelli
      d. Entamoeba histolytica ƒہ

      2- Entamoeba histolytica trophozoites encyst in:
      a. the wall of lower part of small intestine
      b. the wall of the recto-sigmoid colon
      c. the lumen of the colon ƒہ
      d. none of the above

      3- Naegleria fowleri infection is diagnosed by:
      a. Blood film
      b. Serological examination
      c. Lumber puncture ƒہ
      d. None of the above

      4- Naegleria fowleri is:
      a. Permanent parasite of man
      b. Free living amoeba
      c. Non pathogenic
      d. Found in running water stream ƒہ

      5- Acanthamoeba species cause:
      a. chronic primary meningoencephalitis
      b. keratitis with blindness
      c. granuloma of internal organs
      d. all of the above ƒہ
      e. none of the above

      6- liver abscess is a known complication of infection with:
      a. fasciola hepatica
      b. giardia lamblia
      c. schistosoma mansoni
      d. entamoeba histolytica ƒہ

      7- regarding toxoplasmosis in humans:
      a. becomes active in immuno-compromised patients
      b. acute infection could be transmitted from mother to fetus
      c. associated with cats
      d. is mainly diagnosed by serological tests
      e. all of the above ƒہ

      8- Toxoplasma gondii is transmitted to human by:
      a. ingestion of soil contaminated by oocyst from cats
      b. ingestion of cysts in undercooked meat
      c. congenital transmission from mother with acute toxoplasmosis
      d. organ transplant and blood transfusion (infected donor)
      e. all of the above ƒہ

      9- cryptosporidium multiplies in:
      a. the lumen of small intestine
      b. the brush border of epithelial lining of small intestine ƒہ
      c. the lumen of large intestine
      d. non of the above

      10- oocyst of Toxoplasma is found in:
      a. human tissue
      b. the brain of chronic patients
      c. faeces of infected cat ƒہ
      d. all of the above

      11- trophozoite of Toxoplasma is:
      a. infective by ingestion
      b. free living
      c. found in chronic infection
      d. obligatory intracellular parasite ƒہ

      12- cyst of Toxoplasma: ( I،¦m not sure !!)
      a. found in acute infection
      b. found in chronic infection ƒہ
      c. found in stool of cats
      d. all of the above

      13- Giardia lamblia affects mainly:
      a. upper small intestine ƒہ
      b. caecum
      c. colon
      d. rectum
      e. stomach

      14- flask shaped ulcers in the colon are caused by:
      a. Giardia lamblia
      b. Acanthamoeba
      c. Entamoeba histolytica ƒہ
      d. Naegleria fowleri
      e. Toxocara canis

      15- in trichomonas vaginalis infection:
      a. is caused by protozoan parasite
      b. the infective stage is the trophozoite
      c. causes vaginal discharge in females
      d. may infect males
      e. all of the above ƒہ

      16- contamination of contact lenses could lead to eye infection with :
      a. Acanthamoeba ƒہ
      b. Entamoeba coli
      c. Onchocerca valvulus
      d. Toxocara canis
      e. Loa Loa

      17- Trichomonas vaginalis :
      a. pseudopodia
      b. cilia
      c. flagella ƒہ
      d. none of the above

      18- the following statements are correct regarding giardiasis :
      a. transmitted by ingestion of cyst
      b. affects mainly the upper small intestine
      c. diagnosed by examination of stool or duodenal contents
      d. most infections are asymptomatic
      e. all are correct ƒہ

      19- infection with giardia lamblia is through:
      a. ingestion of the trophozoite stage
      b. ingestion of the cyst stage ƒہ
      c. ingestion of the egg

      20- after ingestion of giardia lamblia, cyst hatching takes place in the :
      a. stomach
      b. lower part of small intestine
      c. upper part of small intestine ƒہ
      d. colon

      21- the parasite that results in symptoms of duodenitis is:
      a. entamoeba coli
      b. balantidium coli
      c. entamoeba histolytica
      d. giardia lamblia ƒہ

      22- the protozoon causing dysenteric symptoms is :
      a. balantidium coli
      e. entamoeba coli
      f. giardia lamblia
      b. trichomonas hominis
      g. entamoeba histolytica ƒہ

      23- the protozoon transmitted mainly by sexual contact is:
      a. trichomonas hominis
      b. dientamoeba fragilis
      c. trichomonas vaginalis ƒہ
      d. retortamonas hominis

      24- Trichomonas vaginalis may inhabit :
      a. the small intestine
      b. the large intestine
      c. the prostate ƒہ
      d. none of the above

      25- Laboratory diagnosis of scabies is best done by:
      a. Fecal examination
      b. Serology
      c. Blood examination
      d. Skin scraping ƒہ
      e. Rectal biopsy

      26- the following diseases are transmitted by anthropode vector:
      a. Malaria
      b. Schistosomiasis
      c. Yellow Fever
      d. Hyadatid cyst
      e. A and C ƒہ

      27- relapse in malaria is common in:
      a. Plasmodium Falciprum
      b. P. vivax
      c. Malignant malaria
      d. P. ovale
      e. B and D ƒہ

      28- the following parasites cause fever except:
      a. Trichenilla spiralis
      b. Naegleria fowleri
      c. Hymenolopis nana ƒہ
      d. Plasmodium vivax

      29- there،¦s lymphadenopathy in the following infections except:
      a. African trypanosomiasis
      b. Toxoplasmosis
      c. Schistosomiasis ƒہ
      d. Kala-azar

      30- skin myiasis is due to invasion of skin by:
      a. sarcoptes scabiei
      b. trematode cercariae
      c. lice
      d. fly larvae ƒہ

      31- dogs are sources of infection for the following parasites except:
      a. ascaris lumbrocoid
      b. echinococus granulosus
      c. leishmania donovani
      d. Toxocara canis
      e. A and C ƒہ

      32- the following statements are true regarding plasmodium falciparum infection:
      a. it causes malignant tertian infection
      b. relapses occur every 3 months
      c. it،¦s characterized by severe anemia
      d. characteristically paroxysms occurs every 72 hours
      e. A and C ƒہ

      33- splenomegaly is not caused by :
      a. schistomiasis
      b. malaria
      c. ascariasis ƒہ
      d. Kala-azar

      34- regarding cutaneous Leishmaniasis :
      a. it،¦s caused by leishmania major
      b. transmitted by sand fly
      c. Diagnosed by skin smear
      d. Endemic in Saudi Arabia
      e. All of the above ƒہ

      35- African trypanosomiasis is caused by :
      a. Trypanosoma brucei ƒہ
      b. Trypanosoma cruzi
      c. Trichenilla spiralis


      36- Naegleria fowleri infection is diagnosed by:
      a. blood film
      b. serological examination
      c. Lumber Puncture ƒہ
      d. None of the above

      37- Nephrotic syndrome in plasmodium malariae is due to :
      a. deposition of immune-complexes in glomerular capillaries ƒہ
      b. the sever anemia
      c. hypoproteinemia
      d. none of the above

      38- cerebral malaria is a known complication of infection with:
      a. plasmodium falciparum ƒہ
      b. P. vivax
      c. P. ovale
      d) P. malariae

      39- sporogony takes place in:
      a. human blood
      b. the liver cells
      c. * mosquitoes ƒہ
      d. other sites

      40- malaria attacks (paroxysms) are caused by:
      a. release of toxins from RBC ƒہ
      b. invasion of RBC by Merozoites
      c. severe hemolytic anemia
      d. all of the above

      41- schizonts of malaria parasite are not seen in peripheral blood in:
      a. P. vivax
      b. P. falciparum ƒہ
      c. P. ovale
      d. P. malariae

      42- in Kala-azar the spleen is enlarged due to:
      a. portal hypertension
      b. bacterial infection
      c. proliferation of reticular system ƒہ
      d. none of the above

      43- Stained smears from organ in Kala-azar show:
      a. amastigote form ƒہ
      b. leptomonas form
      c. epimastigote form
      d. crithidia form

      44- regarding visceral Leishmaniasis:
      a. it causes enlargement of liver and spleen
      b. is caused y leishmania tropica
      c. characterized by fever
      d. transmitted by direct contact with infected person
      e. A and C ƒہ

      45- Nephrotic syndrome occurs more with :
      a. Plasmodium vivax
      b. P. Malariae ƒہ
      c. P. ovale
      d. P. falciparum

      46- plasmodium falciparum is the most serious due to:
      a. absence of true relapse
      b. irregular paroxysms
      c. adherence and blocking of capillaries of internal organs ƒہ
      d. multiple infections inside the RBC،¦s

      47- Black water fever is due to:
      a. blockage of capillaries to internal organs
      b. rupture of infected and non infected RBC،¦s ƒہ
      c. hypoglycemia

      48- plasmodium life cycle in female mosquito is named:
      a. gametogony
      b. schizogons
      c. sporogony ƒہ

      49- in cutaneous leishmania the infective stage is:
      a. leishmania form
      b. amastigote form
      c. Leptomonas form (promastigote) ƒہ
      d. None of the above

      50- in visceral Leishmaniasis culture of the biopsy material on NNN medium results in :
      a. amastigote form
      b. Leptomonas form (promastigote) ƒہ
      c. Epimastigote form
      d. Leishmania form
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      Lennie Fasano is offline MedicalGeek Verified
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      Question 12: Toxoplasma cyst is found in cat stools
      Question 22: even if the protozoon that causes dysenteric symptoms is E. Histolytica by definition Balantidium Coli (class ciliophora) gives 15 stools per day which are mucous, liquid or even bloody and are associated with nausea, abdominal discomfort, weight loss and in sever cases, fever and prostation.
      Question 29: Schistosomiasis can give lymphadenopathy in cases of schistosoma mansoni or japonicum parassitosis; just schistosoma haematobium is more likly to induce "Urinary bilharziasis" also known as " vesical schistosomiasis".
      Question 38: Cerebral malaria is also found in chronic states of P. vivax infections.
      Question 45: for what I know, P. Falciparum also does.
      vitrag24 likes this.

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