Protozoans

Question 1

Survives at cold temps 0-40C

Answer 1

Entamoeba moshkovskii

Question 2

Small race of E. histolytica

Answer 2

Entamoeba hartmanni

Question 3

Iodine stains large glycogen body dark brown

Answer 3

Iodamoeba butschlii

Question 4

Food vacuoles has ingested leukocytes

Answer 4

Entamoeba gingivalis

Question 5

Cyst form has 8 nucleus, iodine stains glycogen

Answer 5

Entamoeba coli

Question 6

Morphologically similar to E. histolytica but different DNA and ribosomal RNA

Answer 6

Entamoeba dispar

Question 7

Only amoeba with no cyst form

Answer 7

Entamoeba gingivalis

Question 8

Dx for cyst stage

Answer 8

Formalin ether/ethyl acetate concentration test, zinc sulfate floatation

Question 9

Merthiolate iodine formalin, more sensitive conc method for

Answer 9

E. histolytica

Question 10

Found on pigs and monkeys, with angular or pointed chromatioidal bars

Answer 10

Entamoeba poleckii

Question 11

Identical to Entamoeba poleckii and can be differentiated by isoenzyme analysis

Answer 11

Entamoeba chatonni

Question 12

Causes amebic liver abscess and colitis

Answer 12

E. histolytica

Question 13

Quadrinucleated, cigar shaped chromatoid bodies

Answer 13

E. histolytica

Question 14

Diagnostic for E. histolytica

Answer 14

Ingested RBC, hematophagous

Question 15

Thermophilic true pathogen

Answer 15

Naegleria fowleri

Question 16

Disease caused by Naegleria fowleri

Answer 16

Primary Amebic meningoencephalitis

Question 17

N. fowleri trophozoite infects penetrates

Answer 17

Penetrates the nasal mucosa and via olfactory nerves to the brain

Question 18

Morphology of Acanthamoeba spp

Answer 18

Acanthopodia = spiny filaments/thorn like

Question 19

Acanthamoeba spp is a possible reservoir for

Answer 19

Begionella, mycobacteria, G- bacilli

Question 20

Diseases caused by Acanthamoeba spp

Answer 20

Acathamoeba keratitis and Granulomatous amebic encephalitis

Question 21

Dx for Acanthamoeba spp

Answer 21

epithelial biopsy and corneal scrapings

Question 22

Trophozoite with progressive directional movement with ingested RBC

Answer 22

E. histolytica

Question 23

Naegleria fowleri morphology

Answer 23

Blunt, lobose pseudopodia and directional motility

Question 24

Naegleria fowleri trophozoites are found in

Answer 24

CSF and tissue

Question 25

Form of Naegleria fowleri not found in brain tissue

Answer 25

cyst form

Question 26

Naegleria fowleri flagellate form are found in

Answer 26

CSF

Question 27

Has suppressor factor that suppresses respiratory burst and nitric oxide production

Answer 27

E. histolytica

Question 28

Function of suppressor factor of E. histolytica

Answer 28

inhibit movement of monocytes and complement assemly