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Protists

Protists. Section 2.13 Pages 128 -133. Taxonomy. Dumping ground for anything that is not a plant, animal or fungus. Size. Some are microscopic, single celled ex. amoeba Some are macroscopic, multicellular ex. kelp . Eukaryotic cell. -membrane-bound nucleus - vacuoles

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Protists

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  1. Protists Section 2.13 Pages 128-133

  2. Taxonomy Dumping ground for anything that is not a plant, animal or fungus

  3. Size • Some are microscopic, single celled ex. amoeba • Some are macroscopic, multicellular ex. kelp

  4. Eukaryotic cell -membrane-bound nucleus -vacuoles -mitochondria -chloroplast

  5. Reproduction • Asexually: by binary fission • Sexually: conjugation (DNA is exchanged)

  6. Unicellular organisms reproduce via binary fission or conjugation

  7. Habitat • Moist environments • Fresh water, salt water, animal fluids, very damp terrestrial environments

  8. Plant-like protists • Chlorophyll • Photosynthetic but can also engulf food

  9. Euglenoids • Photosynthetic, eye spot, flagellum, pellicle, no cell wall, nucleus, chloroplasts, vacuoles

  10. Red algae • Autotrophic, multicellular

  11. Green Algae • Unicellular phytoplankton

  12. Brown algae • autotrophic, multicellular

  13. Algae Importance • produce food • supply oxygen • Pollution is a problem • Food source • Agar • Carrageenan is a filler • Petroleum resources

  14. diatoms • Autotrophic, unicellular

  15. Animal-like protists • Heterotrophs • Movement

  16. amoebas • heterotrophic, pseudopods

  17. Ciliates • Heterotrophic, unicellular, many cilia • paramecium

  18. Paramecium • Heterotrophic • Macronuclei and micronuclei • Vacuoles • Gullet • Cilia • Trichocysts

  19. Apicomplexa • Heterotrophic, unicellular,

  20. Malaria Plasmodium sporozoans

  21. Entamoebahystolytica • Amoebic dysentery

  22. Beaver fever • Giardia lamblia

  23. African sleeping sickness • Trypanosoma protozoa tsetse fly

  24. Fungi-like protists • Cool, shady, moist places

  25. slime moulds • heterotrophic, life stages include unicellular and multicellular stages, flagella or pseudopods.

  26. Importance • Disease • Food chain • Oxygen • Digestive tract dwellers

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