Morphology

• The size of trophozoites of E. histolytica typically ranges from:

  =  8 to 65 µm
• The movement of trophozoites is facilitated by:

  = Hyaline pseudopods
• The nucleus of trophozoites contains a small central mass of chromatin called:

  = Karyosome
• The cytoplasm of trophozoites is characterized by its:

  = Ground glass appearance
• Which of the following is a diagnostic feature of trophozoites?A)Unidirectional movementB) Presence of RBCs in the cytoplasmC) Small size rangeD) Peripheral chromatin distribution

  = Presence of RBCs in the cytoplasm
• The size of cysts is typically:

   Smaller than trophozoites
• The presence of a hyaline cyst wall helps in the recognition of:

  = Mature cysts
• Young cysts contain unorganized chromatin that transforms into:

  = Chromatoid bars
• What is usually visible in young cysts and represents stored food?

  = Diffuse glycogen mass
• Mature cysts are devoid of:

  = RBCs