amoeba

Question 1

extraintestinal amoeba

Answer 1

E. gingivalis
N. fowleri
Acanthamoeba spp.

Question 2

assoc with PAM

Answer 2

N. fowleri

Question 3

assoc with GAE and keratitis

Answer 3

Acanthamoeba spp

Question 4

with active varying MULTIPLE pseudopods (long short blunt)

Answer 4

E. gingivalis

Question 5

has sluglike motility
BLUNT pseudopods

Answer 5

N. fowleri

Question 6

has sluggish motility
SPINELIKE PSEUDOPODS (ACANTHOPODIA) - project outward from the base

Answer 6

Acanthamoeba spp

Question 7

no. of nuclei of trophozoites and cysts of extraintestinal amoeba

Answer 7

consistently 1!!!

Question 8

only amoeba that ingests WBC

Answer 8

E. gingivalis

Question 9

only amoeba with NO CYSTS form

Answer 9

E. gingivalis

Question 10

only amoeba with 3 morph form (trophozoites, cysts, flagellate)

Answer 10

N. fowleri

Question 11

extraintestinal amoeba that resembles E. histolytica

Answer 11

E. gingivalis

Question 12

broad anterior end
tapered posterior end

Answer 12

N. fowleri

Question 13

pear shaped form

Answer 13

flagellate form of
N. fowleri

Question 14

has jerky spinning motility

Answer 14

N. fowleri flagellate form

Question 15

has DOUBLE CELL WALL CYST that aids in its ID

Answer 15

Acanthamoeba spp
(smooth inner, jagged outer)

Question 16

spx used to both ID E. gingivalis and E. histolytica

Answer 16

pulmonary abscess
sputum

Question 17

method of choice for N. fowleri trophozoites

Answer 17

CSF micro exam

Question 18

its trophozoites has TRAILING EFFECT on agar pkates inoculated with gram neg bacilli

Answer 18

N. fowleri

Question 19

technique of choice to speciate Acanthamoeba

Answer 19

Indirect Immunofluorescent Ab stain

Question 20

specimen of choice for Acanthamoeba troph and cyst

Answer 20

CSF

Question 21

specimen of choice for Acanthamoeba eye inf

Answer 21

corneal scrapings

Question 22

produce TRACKS as they feed on a non-nutrient agar plate seeded with E. coli

Answer 22

Acanthamoeba spp.

Question 23

stains Acanthamoeba cysts in corneal scrapings

Answer 23

Calcofluor white (for histo exam)

Question 24

first amoeba recovered from human spx

Answer 24

E. gingivalis

Question 25

only form known to exist in humans

Answer 25

Trophozoites of N. fowleri

Question 26

known to exist only in external environment

Answer 26

Cyst of N. fowleri

Question 27

Naegleria spp that could infect humans in the future Pathogenic in mice Intranasal installation

Answer 27

N. australiensis

Question 28

aids in taxonomix classification of N. fowleri and Acanthamoeba

Answer 28

DNA RFLP tests

Question 29

responsible for most CNS and Eye infection

Answer 29

Acanthamoeba castellanii

Question 30

assoc with contact lens wearer

Answer 30

Acanthamoeba

Question 31

shares many characteristics with gram neg PSEUDOMONAS AERUGINOSA

Answer 31

Acanthamoeba

Question 32

intestinal amoeba

Answer 32

E. histolytica E. hartmanni E. coli E. polecki E. nana I. butschlii

Question 33

intestinal amoeba assoc with: Intestinal amebiasis Amebic colitis Amebic dysentery Extraintestinal amebiasis

Answer 33

E. histolytica E. hartmanni E. coli

Question 34

rapid, UNIDIRECTIONAL, progressive finger-like hyaline pseudopods

Answer 34

E. histolytica

Question 35

Nonprogressive Finger-like pseudopods

Answer 35

E. hartmanni

Question 36

Sluggish, nonprogressive BLUNT pseudopods

Answer 36

E. coli

Question 37

intestinal amoeba trophozoites nucleus no.

Answer 37

1!!

Question 38

their CYSTS consists of 1-4 nucleus 4 is usually MATURE INFECTIVE CYSTS AND SMALLER

Answer 38

E. histolytica E. hartmanni E. nana

Question 39

intestinal amoeba with consistently having 1 nucleus in both troph and cysts stage

Answer 39

E. polecki I. butschlii

Question 40

cysts may have 1-8 nucleus or greater than 16

Answer 40

E. coli

Question 41

has ground glass cytoplasm

Answer 41

E. histolytica

Question 42

ingested RBCs

Answer 42

E. histolytica (diagnostic feature)

Question 43

beaded appearance of peripheral chromatin

Answer 43

E. hartmanni

Question 44

has HYALINE CYSTS WALL

Answer 44

E. histolytica

Question 45

has THIN chromatoid bars with pointed to splintered ends

Answer 45

E. coli

Question 46

young cysts have diffuse glycogen mass that may DISPLACE NUCLEI (often seen in cysts with 2 nuclei)

Answer 46

E. coli

Question 47

special medium for E. histolytica

Answer 47

TYI-S-33

Question 48

size ranges overlap; requires OCULAR MICROMETER

Answer 48

E. histolytica E. hartmanni

Question 49

prevalence is similar to that of E. histolytica

Answer 49

E. hartmanni

Question 50

only known PATHOGENIC INTESTINAL amoeba

Answer 50

E. histolytica

Question 51

vector borne intestinal amoeba

Answer 51

E. histolytica hartmanni coli

Question 52

NONPATHOGENIC morphologically identical to E. histolytica

Answer 52

E. dispar

Question 53

small race E. histolytica

Answer 53

E. hartmanni

Question 54

has SLUGGISH PROGRESSIVE motility in normal stools has PROGRESSIVE, UNIDIRECTIONAL motility in diarrheal stools

Answer 54

E. polecki

Question 55

nuclear structure resembles E. histolytica and E. coli

Answer 55

E. polecki

Question 56

Key feature is ABSENT PERIPHERAL CHROMATIN

Answer 56

E. nana also I. butschlii

Question 57

has SLUGGISH NON PROGRESSIVE motility BLUNT HYALINE PSEUDOPODS

Answer 57

E. nana

Question 58

has SLUGGISH PROGRESSIVE motility

Answer 58

I. butschlii

Question 59

large irregular blotlike karyosome

Answer 59

E. nana

Question 60

has ABSENT chromatoid bar

Answer 60

E. nana I. butschlii

Question 61

feature seen in Entamoeba

Answer 61

has CHROMATOID BARS

Question 62

has WELL DEFINED GLYCOGEN MASS with DEFINITE BORDERS

Answer 62

I. butschlii

Question 63

glycogen mass typically picks up IODINE STAIN

Answer 63

I. butschlii

Question 64

parasite of pigs and monkeys

Answer 64

E. polecki

Question 65

only discomfort for symptomatic px is diarrhea

Answer 65

E. polecki

Question 66

acquired from contaminated HOG feces

Answer 66

I. butschlii

Question 67

nucleus does NOT undergo typical division (diff from other intestinal amoeba)

Answer 67

Iodameoba

Question 68

cyst nucleus: BASKET OF FLOWERS

Answer 68

I. butschlii