UAMS Parasitology Exam #3 Questions and
Answers (100% Correct Answers) Already
Graded A+
Cyst - resistant, transmissible, and non motile
Excystation - escapes from cyst after being swallowed by
host
Trophozoite - growth and feeding stage, reproductive
stage, motile, and sometimes transmissible [ Ans: ] What
are the 3 stages of the life cycle of amoebae and ciliates?
Cyst [ Ans: ] Identify which stage of the amoebae life cycle
Trophozoite [ Ans: ] Identify which stage of the amoebae
life cycle
Binary fission [ Ans: ] How do amoebae and ciliates
reproduce?
Entomoeba histolytica [ Ans: ] Which amoebae species
cyst phase has smooth and even chromatin, small and
central karyosome, and rounded chromatoidal bars?
E. histolytica [ Ans: ] Identify species and life cycle stage
E. histolytica [ Ans: ] Which amoebae species trophozoite
phase has smooth and even chromatin, small and central
karyosome, ingested RBCs in the cytoplasm, and has
purposeful motility?
, E. histolytica trophozoite. Hallmark feature is ingested
RBCs. [ Ans: ] Identify species and life cycle stage
E. dispar [ Ans: ] What is E. histolytica morphologically
identical to unless there are ingested RBCs?
Infective stage - cyst, method of infection - ingest cyst
through contaminated food, water, fomite, or sexual
transmission, diagnostic stage - cyst or trophozoite, and
method of diagnosis - identify cyst or trophozoite in feces
or identify with serology or PCR.
Cyst seen in formed feces, while trophozoite seen in
diarrhea because it has motility and can move around. [
Ans: ] What is the life cycle of E. histolytica?
Amebic dysentery - extreme GI symptoms with diarrhea
that can lead to death due to water loss.
Extraintestinal amebiasis - can move out of the intestines
into other organs [ Ans: ] What diseases is E. histolytica
capable of causing?
E. hartmanni [ Ans: ] What is the one of the non
pathogenic amoebae that is identical to E. histolytica but
smaller?
E. hartmanni cyst [ Ans: ] Identify amoebae species and
phase.
E. hartmanni trophozoite [ Ans: ] Identify amoaebae
species and phase.
Answers (100% Correct Answers) Already
Graded A+
Cyst - resistant, transmissible, and non motile
Excystation - escapes from cyst after being swallowed by
host
Trophozoite - growth and feeding stage, reproductive
stage, motile, and sometimes transmissible [ Ans: ] What
are the 3 stages of the life cycle of amoebae and ciliates?
Cyst [ Ans: ] Identify which stage of the amoebae life cycle
Trophozoite [ Ans: ] Identify which stage of the amoebae
life cycle
Binary fission [ Ans: ] How do amoebae and ciliates
reproduce?
Entomoeba histolytica [ Ans: ] Which amoebae species
cyst phase has smooth and even chromatin, small and
central karyosome, and rounded chromatoidal bars?
E. histolytica [ Ans: ] Identify species and life cycle stage
E. histolytica [ Ans: ] Which amoebae species trophozoite
phase has smooth and even chromatin, small and central
karyosome, ingested RBCs in the cytoplasm, and has
purposeful motility?
, E. histolytica trophozoite. Hallmark feature is ingested
RBCs. [ Ans: ] Identify species and life cycle stage
E. dispar [ Ans: ] What is E. histolytica morphologically
identical to unless there are ingested RBCs?
Infective stage - cyst, method of infection - ingest cyst
through contaminated food, water, fomite, or sexual
transmission, diagnostic stage - cyst or trophozoite, and
method of diagnosis - identify cyst or trophozoite in feces
or identify with serology or PCR.
Cyst seen in formed feces, while trophozoite seen in
diarrhea because it has motility and can move around. [
Ans: ] What is the life cycle of E. histolytica?
Amebic dysentery - extreme GI symptoms with diarrhea
that can lead to death due to water loss.
Extraintestinal amebiasis - can move out of the intestines
into other organs [ Ans: ] What diseases is E. histolytica
capable of causing?
E. hartmanni [ Ans: ] What is the one of the non
pathogenic amoebae that is identical to E. histolytica but
smaller?
E. hartmanni cyst [ Ans: ] Identify amoebae species and
phase.
E. hartmanni trophozoite [ Ans: ] Identify amoaebae
species and phase.
