Quiz 4: Protozoa

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27 Terms

1
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Entamoeba histolytica: Phylum/subphylum

Sarcodina

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Magistophora organisms

  1. Trichomonas vaginalis

  2. Giardia lamblia

  3. Trypanosoma brucei

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Apicomplexa organisms

  1. Plasmodium falciparum

  2. Toxoplasma gondii

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Entamoeba histolytica: Motility

Pseudopods

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Entamoeba histolytica: Disease

Dysentery - bloody mucoid stool

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Organisms via Fecal-oral route

  1. Entamoeba histolytica

  2. Giardia lamblia

  3. Balantidium coli

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Entamoeba histolytica: Distinguishing Features

  • Trophozoite: bulls eye

  • Cyst: 1-4 bulls eye

<ul><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Trophozoite</mark>: bulls eye</p></li><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Cyst</mark>: 1-4 bulls eye</p></li></ul><p></p>
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Mastigophora

Flagella

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Trichomonas vaginalis: Disease

Trichomoniasis — vaginal discharge, painful urination (females only)

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Trichomonas vaginalis: Transmission

Sexual intercourse

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Trichomonas vaginalis: Distinguishing Features

Trophozoite only: 4 flagella, undulating membrane

<p>Trophozoite only: 4 flagella, undulating membrane </p>
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Giardia lamblia: Disease

Giardiasis — diarrhea, dehydration

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Giardia lamblia: Distinguishing Features

  • Trophozoite: sting ray shaped, 2 nuclei w/ karyosomes, flagella

  • Cyst: 2-4 nuclei w/ karyosomes, median body

<ul><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Trophozoite</mark>: sting ray shaped, 2 nuclei w/ karyosomes, flagella</p></li><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Cyst</mark>: 2-4 nuclei w/ karyosomes, median body </p></li></ul><p></p>
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Trypanosoma brucei: Disease

Trypanosomiasis — “African sleeping sickness” - fever, anemia, sleepiness, unconsciousness

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Trypanosoma brucei: Transmission

Bite of tsetse fly

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Trypanosoma brucei: Distinguishing Features

Trophozoite only: “S” shape, undulating membrane, flagella, central nucleus

<p>Trophozoite only: “S” shape, undulating membrane, flagella, central nucleus </p>
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Balantidium coli: Phylum/Subphylum

Ciliophora

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Balantidium coli: Motility

Cilia

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Balantidium coli: Disease

Balantidiasis — bloody mucoid stool (dysentery - rare)

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Balantidium coli: Distinguishing Features

  • Trophozoite: large oval, bean shaped nucleus, cilia

  • Cyst: circular, bean shaped nucleus, no cilia

<ul><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Trophozoite</mark>: large oval, bean shaped nucleus, cilia</p></li><li><p><mark data-color="yellow" style="background-color: yellow; color: inherit">Cyst</mark>: circular, bean shaped nucleus, no cilia </p></li></ul><p></p>
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Apicomplexa

Non-motile

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Plasmodium falciparum: Disease

Malaria — liver & blood infection, fever, chills

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Plasmodium falciparum: Transmission

Bite of female Anopheles mosquito

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Plasmodium falciparum: Distinguishing Features

Merozoites: inside RBC, “ring” stage

<p>Merozoites: inside RBC, “ring” stage </p>
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Toxoplasma gondii: Disease

Toxoplasmosis — asymptomatic, or behavior modification (adults), multiorgan damage (fetus)

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Toxoplasma gondii: Transmission

Ingestion of oocysts from cat feces, transplacental

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Toxoplasma gondii: Distinguishing Features

Tachyzoites: banana shaped cells, prominent nucleus

<p>Tachyzoites: banana shaped cells, prominent nucleus </p>