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26-protistAoutl - Biology 3 Lecture The Protista(Ch 26 2011...

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Biology 3 Lecture: The Protista (Ch 26) ©2011 copyright Marta D. de Jesus I. Eukaryotic cells in general A. size B. complexity endosymbiosis: orig. fr. Mereschkowsky (1910), Margulis (1970) 1) primary 2) serial/secondary nucleomorph 3. genome 4. groupings II. “K”: Protista (= Protoctista) in general A. General aspects 1. overall not a monophyletic group 2. body 3. most ancient group of euk acritarchs 4. usually live 5. most aerobic 6. nutrition a. photoautotrophic groups b. chemoheterotrophic groups c. photoheterotrophs 7. other distinguishing characters
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8. reproduction a. asexual b. invented sexual reproduction syngamy & meiosis c. many different life cycles/life histories basic possibilities (i) diploid (ii) haploid (iii) alternation of generation 9. importance to the world 10. fields of study B. Non-taxonomic (but somewhat functional) groupings 1. algae 2. protozoans 3. “fungal-like” 4. plankton phytoplankton & zooplankton III. Groups according to text A. earliest eukaryotes 1. SuperGroup: Excavata/Excavates a. Diplomonads mitosomes eg: Giardia b. Parabasalids hydrogenosomes
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