O foraminifera secrete a calcium carbonate caco3

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o Foraminifera= secrete a Calcium Carbonate (CaCO3) shell Pellicle= thin layer of elastic proteins just under the PM protects the cell and allows it to retain a particular shape Anaerobic Flagellates o Diplomonads and parabasalids have multiple flagella & among the few protists adapted to oxygen poor waters Have HYDROGENOSOMES= organelles that produce ATP by an aerobic pathway and release H2 gas as a by product. Evolve from mitochondria and adapt organisms to anaerobic aquatic habitats Thrive deep in seas and lakes & others live in animals Diplomonad Giardia lamblia o Can infect human gut= giardiasis Attaches to intestinal lining and takes up nutrients Excreted in feces if infected Protistan cyst is a dormant cell with a thick protective wall Parabasalid Trichomonas vaginalis o Infects human reproductive tracts and causes trichomoniasis o Doesn’t make cysts o Anti-protozoal drug provides cure Trypanosomes and other Kinetoplastids o Kinetoplastids Flagellated protozoans that have a single large mitochondrion Inside mito., near base of flagellum have clump of DNA
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Some prey of bacteria in fresh water and seas, but…
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