Micro Lecture 7

Micro Lecture 7 - Lecture 7 Microbiolgy 31 Protistans*Most...

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Lecture 7 Microbiolgy 31 Protistans *Most protistans have no medical significance. Protistan characteristics Eukaryotic Most unicellular Some simple multicellular Some grow quite large. Many pathogenic Many free-living Non-parasitic 3 groups are closely related to other kingdoms plants animals fungi Plant-like protistans Algae Photosynthetic autotrophs Free-living Non-parasitic Unicellular Green algae Multicellular Brown algae Colonial Volvox Few medically significant groups
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Diatoms Unicellular or Filamentous Cell walls of pectin and silica Fresh water and marine Form diatomatious earth-sediment Left behind after death of diatoms Most are harmless Mined for abrasives and filters Toothpaste Pool filters Few cause “Domoic Acid Intoxication” Results form ingesting mussels that consume diatoms Dinoflagellates Dino = terrible
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