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 (A)</p> Signup and view all the answers

Which amoeba has mature cysts with 4 nuclei?

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

How can Entamoeba coli be differentiated from Entamoeba dispar?

<p>By the chromatoidal bodies (B)</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 (C)</p> Signup and view all the answers

How can Entamoeba histolytica be differentiated from nonpathogenic Entamoeba dispar?

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

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

<p>Moderate leukocytosis (A)</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 (A)</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 (C)</p> Signup and view all the answers

What is the process of excystation?

<p>Amoeba escaping from the cyst and multiplying inside the host (A)</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 (C)</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 (A)</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 (B)</p> Signup and view all the answers

How does E.histolytica cause extraintestinal amoebiasis?

<p>By tophozoites multiplying in the liver (A)</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 (B)</p> Signup and view all the answers

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