Commensal Entamoeba in Stools

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Questions and Answers

Why is it important to differentiate commensal amoeba from pathogenic E.histolytica?

  • To avoid unnecessary treatment of patients (correct)
  • To improve the taste of contaminated food and water
  • To prevent the spread of disease
  • To enhance the survival of the amoeba

What is a distinguishing nuclear feature of the cysts of genus Entamoeba?

  • Multiple nuclei
  • A small karyosome located near the nucleus periphery (correct)
  • Absence of chromatin granules
  • Lack of nuclear membrane

Which amoebae genus has a vesicular nucleus with an irregularly shaped karyosome?

  • Endolimax (correct)
  • Moshkovskii
  • Entamoeba
  • Iodamoeba

How do commensal amoebae reproduce?

<p>By binary fission of trophozoites (D)</p> Signup and view all the answers

Where does encystation occur in amebae according to the text?

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

How does E.dispar differ from E.histolytica?

<p>Their DNA and ribosomal RNA are different (D)</p> Signup and view all the answers

Which human amoeba is known for being osmotolerant and able to grow at room temperature?

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

How does the size of Entamoeba hartmanni compare to that of Entamoeba histolytica?

<p>Entamoeba hartmanni is smaller (C)</p> Signup and view all the answers

What differentiates Entamoeba coli from Entamoeba histolytica in terms of motility?

<p>E.coli has unidirectional motility (C)</p> Signup and view all the answers

How can E.coli be differentiated from E.histolytica based on the endoplasm characteristics?

<p>Granular endoplasm with bacteria but no red blood cells (D)</p> Signup and view all the answers

In what way does the cyst of Entamoeba polecki differ from that of Entamoeba histolytica?

<p>Larger size and fewer nuclei (B)</p> Signup and view all the answers

Where can Entamoeba gingivalis be primarily found in the human body?

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

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