Protozoa - organism • Resistant to chlorine must boil or filter Trichomonas vaginalis http/www.cdc.gov/std/stats/tables/table47.htm Rhizopoda •

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Protozoa Unicellular Eukaryotic Chemoheterotrophs Normally present as a trophozoite >20,000 species Very few are pathogenic
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Life Cycles Asexual reproduction Fission Budding Schizogony
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Life Cycles Sexual reproduction Conjugation Gametogenesis
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Encystment Occurs under adverse conditions Produce a capsule Permits survival in absence of food, moisture, or oxygen
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Coccidiosis http://www.imagecyte .com/animations/coccid.swf
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Important Phyla of Protozoa Archaezoa Microspora Rhizopoda Apicomplexa Ciliophora Euglenozoa
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Archaezoa Lack mitochondria Many live as symbionts in digestive tracts of animals Most have flagella for movement
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Giardia Lamblia Causative agent of giardiasis Malaise, nausea, flatulence, weakness, weigh loss, abdominal cramps 7% of population are healthy carriers 18% of surface water supplying municipalities tested positive for
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Unformatted text preview: organism • Resistant to chlorine must boil or filter Trichomonas vaginalis http://www.cdc.gov/std/stats/tables/table47.htm Rhizopoda • Move by pseudo pod cytoplasmic projections Entamoeba Histolytica Trophozoites in Intestinal mucosa Entamoeba Histolytica Trophozoites Apicomplexa • Non motile in mature forms • Obligate intracellular parasite • Complex/special organelles at apexes of cell • Complex life cycle Plasmodium falciparum Ciliophora • Have cilia arranged in rows • The only human parasite is Balantidium coli Leishmania Amastigotes Other Ciliaphora Paramecium Euglenozoa • Two groups of these flagellated cells • Euglenoids – photoautotrophs • Hemoflagellates (blood parasites) Trypanosomiasis Trypanosoma cruzi (American trypanosomiasis, Chagas' disease)...
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This note was uploaded on 01/16/2012 for the course BIOLOGY 251 taught by Professor Lancebowen during the Fall '10 term at Truckee Meadows Community College.

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Protozoa - organism • Resistant to chlorine must boil or filter Trichomonas vaginalis http/www.cdc.gov/std/stats/tables/table47.htm Rhizopoda •

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