02 - Amoebae, Trichomonads, Histomonads

Question 1

(Amoebae)

1. what are the three main features?

Answer 1

1. pseudopodia, binary fission, +-cysts

Question 2

(Amobae)

some free living, some commensals, some parasites

Question 3

(Entamoeba Histolytica)

(hosts and prevalence)

1. present in what percent of primates?
2. present in wild/zoos
3. how common in domestic?

Answer 3

1. 10%
2. infrequent

Question 4

(Entamoeba Histolytica)

Question 5

(Entamoeba Histolytica)

1. multiplies by what?

Answer 5

1. binary fission

Question 6

(Entamoeba Histolytica)

(pathogenesis)

1. infection low in nature
2. in zoos may be of humans origin
3. infection in primates similar to humans

(humans)

live in intestine

90% asympomatic

(dog and cat)

infrequent

human origin

Question 7

DO NOT MEMORIZE

Answer 7

Question 8

(Entamoeba Histolytica)

(diagnosiss)

Answer 8

pay attention to formalin!

Question 9

(Nonpathogenic amoeba)

vs. (Entamoeba Histolytica)
1. entamoeba hartmanni cysts have 4 nuclei but are what?
2. entamoeba coli cysts have 8 nuclei and are what?

Answer 9

1. smaller
2. usually larger

(generally once must distinguish between coli and (Entamoeba Histolytica)

Question 10

(Entamoeba Histolytica)

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