Entamoeba Classification Quiz
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Questions and Answers

How is Entamoeba coli distinguished from E.histolytica?

  • By having a thin nuclear envelope
  • By having mature cysts with 4 nuclei
  • By having chromatoidal bodies with rounded ends (correct)
  • By having a prominent endosome

    • What characteristic helps in differentiating Entamoeba coli from E.histolytica?

  • Eccentric endosome
  • Endosome with a prominent knob
  • Large glycogen vacuole (correct)
  • Multiple nuclei in mature cysts

    • In what way is Entamoeba coli morphologically different from Entamoeba histolytica?

  • Presence of splintered chromatoidal bodies (correct)
  • Eccentric endosome
  • Size being smaller
  • Thin nuclear envelope

    • What is a distinguishing feature of Endolimax nana?

    <p>Large eccentric endosome</p> Signup and view all the answers

    Which amoeba has mature cysts with 4 nuclei?

    <p>Endolimax nana</p> Signup and view all the answers

    How can Entamoeba coli be differentiated from Entamoeba dispar?

    <p>By the chromatoidal bodies</p> Signup and view all the answers

    What are the common symptoms associated with Entamoeba coli infection?

    <p>Fever, chills, and diarrhea often with cramps</p> Signup and view all the answers

    How can Entamoeba histolytica be differentiated from nonpathogenic Entamoeba dispar?

    <p>Based on isoenzymatic or immunologic analysis</p> Signup and view all the answers

    What is the common method for diagnosing Entamoeba histolytica using stool samples?

    <p>Microscopic identification of cysts and trophozoites</p> Signup and view all the answers

    Which blood examination finding is commonly seen in cases of Entamoeba coli infection?

    <p>Moderate leukocytosis</p> Signup and view all the answers

    What is the treatment of choice for symptomatic intestinal or extraintestinal Entamoeba coli infections?

    <p>Metronidazole or tinidazole, followed by paromomycin or iodoquinol</p> Signup and view all the answers

    Which diagnostic method is useful for identifying trophozoites in aspirates or biopsy samples of Entamoeba coli obtained during colonoscopy or surgery?

    <p>Histology</p> Signup and view all the answers

    What is the process of excystation?

    <p>Amoeba escaping from the cyst and multiplying inside the host</p> Signup and view all the answers

    What is the main pathogenic mechanism of E.histolytica in causing intestinal amoebiasis?

    <p>Production of flask-shaped ulcers and bloody diarrhea</p> Signup and view all the answers

    What may occur about 1-3 months after the disappearance of dysentery in individuals with intestinal amoebiasis?

    <p>Development of hepatic amoebiasis</p> Signup and view all the answers

    What are some factors that influence the pathogenicity of E.histolytica infections?

    <p>State of nutrition of the host</p> Signup and view all the answers

    How does E.histolytica cause extraintestinal amoebiasis?

    <p>By tophozoites multiplying in the liver</p> Signup and view all the answers

    What is a common outcome when small abscesses in the liver merge due to E.histolytica infection?

    <p>Formation of big liver abscesses</p> Signup and view all the answers

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