1.2.1 Protozoans (Amoeba)

Question 1

All Amoebas are intestinal except?

Answer 1

E. gingivalis

Question 2

No chromatoidal bodies / Peripheral chromatin

Answer 2

Endolimax nana

Iodamoeba butchlii

Question 3

Lately, what ameoba has cyst?

Answer 3

D. fragilis

Question 4

Trophozoites:
Pseudopod = Long and finger-like
Movement = Progressive unidirectional
Cytoplasm = Clean, no RBC
Peripheral chromatin = Even

Answer 4

Entamoeba histolytica

Question 5

Trophozoites:
Pseudopod = Round, blunted
Movement = Sluggish, nondirectional
Cytoplasm = Dirty, w/ RBC
Peripheral chromatin = Irregular

Answer 5

Entamoeba coli

Question 6

Cyst:
Nuclear membrane = Thin
Karyosome = Minute central
Chromatoidal body = Cigar / Sausage
Nucleus = 1-4 (<4)

Answer 6

Entamoeba histolytica

Question 7

Cyst:
Nuclear membrane = Thick
Karyosome = Eccentric central
Chromatoidal body = Whisk shape/ Splintered glass
Nucleus = 1-8 (>4)

Answer 7

Entamoeba coli

Question 8

Which among entamoeba is non-pathogenic?

Answer 8

E. coli

Question 9

Part of E. histolytica that causes cytoadherence

Answer 9

Lecithin

Question 10

Part of E. histolytica that causes CPE, mucous adhesion

Answer 10

Cysteine proteinase

Question 11

Part of E. histolytica that causes Cytolysis

Answer 11

Amoebaphores

Question 12

Infective stage of E. histolytica can also be use for Diagnosis

T or F

Answer 12

T

Question 13

E. _______ is morphologically like E. histolytica to which in differentiating them is though PCR

Answer 13

dispar

Question 14

Small Entamoeba

Answer 14

E. hartmanni

Question 15

Smallest protozoan

Answer 15

Endolimax nana

Question 16

Has no cyst that causes pyorrhea alveolaris

Answer 16

Entamoeba gingivalis

Question 17

Endolimax nana (Karyosome)

Trophozoite: cross-eye

Cyst: Blot-like

T or F

Answer 17

F

Baligtad

Question 18

Cyst of Endolimax nana contains how many nuclei?

Answer 18

4

Question 19

Endolimax nana has no chromatin
which indicated not true amoeba

T or F

Answer 19

T

Question 20

What is the infective stage for E. histolytica?

Answer 20

Cyst

Question 21

Trophozoite: Large karyosome surrounded by granules

Cyst: 1 nuclei with large glycogen vacuole

Answer 21

Iodamoeba butchlii

Question 22

This amoeba contains spiny hyaline extensions

Answer 22

Acanthamoeba sp.

Question 23

What do you call the spiny hyaline extensions of Acanthamoeba?

Answer 23

Acanthopods

Question 24

Which of the following are non pathogenic:

E. coli
E. gingivalis
Iodamoeba butchlii
Endolimax nana

Answer 24

All of them

Question 25

What is the infective stage for Acanthamoeba?

Answer 25

Trophozoite

Question 26

Causes amebic liver abcess (ALA)

Answer 26

E. histolytica

Question 27

amebic liver abcess looks like a?

Answer 27

Anchovy sauce

Question 28

E. histolytica Amoebic dysentery (Flask shaped ulcer) is seen in the ________

Answer 28

colon

Question 29

Indication of infection for E. histolytica that is cause by eosinphils

Answer 29

Charcot leyden Crystals

Question 30

This amoeba causes disease from contact lens, Corneal infection, Chronic meningoencephalitis in Immunocompromised, and Granulomatous amoebic encephalitis

Answer 30

Acanthamoeba sp.

Question 31

Granulomatous Amoebic Encephalitis is usually and quite common in Acanthamoeba T or F

Answer 31

T

Question 32

Immunocompromised patients are more likely to get disease from Acanthamoeba than healthy person T or F

Answer 32

T