Chapter 28

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Author:
kamrunsreno
ID:
172005
Filename:
Chapter 28
Updated:
2012-09-19 19:29:44
Tags:
Biology
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Description:
Exam 1
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  1. General Characteristics of Protists
    • Eukaryotic organisms (Domain Eukarya) 
    • –Nucleus, membrane bounded organelles 
    • • Most single-celled 
    • –Some colonial and multicellular 
    • • Diverse nutritionally 
    • –Autotrophs, heterotrophs, mixotrophs 
    • • Reproduction highly varied 
    • –Asexual & all 3* sexual life histories found
  2. Excavata--Euglenozoans
    • Have spiral or crystalline rod inside flagella 
    • –Kinetoplastids 
    • • Ex. Trypanosoma Sleeping sickness (Tsetse fly) 
    • –Euglenids* 
    • • Many are mixotrophs (ex. Euglena with chloroplasts)
  3. Dinoflagellates
    Chromalveolates

    • Cellulose armor plates
    •   2 flagella in plate grooves
    • causes red tides (molluscs can become toxic)
  4. Ciliates
    • Chromalveolates
    • Cilia to move and feed (ex paramecium)
  5. Diatoms
    • Chromalveolates
    • Unicellular photosyntheitc algae with SiO2 cell wall
  6. brown algae
    • Chromalveolates
    • Defined by their respective carotenoid pigments
    • Many large seaweeds are brown algae (ex kelps)
  7. Forams
    • Rhizarians
    • Porous tests (shells) hardened with CaCO3
    • -Pseudopodia extend through pores
    • Often contain symbiotic algae
  8. Chlorophytes (green algae)
    • Archaeplastida
    • Chloroplast structure much like land plants
    • same types of chlorophylls as well
    • immediate ancestors to land plants
  9. Plasmodial slime molds
    • Unikonts
    • Form a plasmodium mass 
    • --one large supercell, multinucleate
  10. Cellular slime molds
    • Unikonts
    • Collection of solitary cells
  11. Gymnaoebas
    • Unikonts
    • Consume bacteria and other protists
    • Mostly free-living
  12. Entamoebas
    • Unikonts
    • Many parasites

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