Bacteria/Protist groups

  1. Proteobacteria
    • Escherichia coli: common inhabitants of intestines; rods (bacilli); some are pathogenic
    • Rhizobium leguminosum: rods (bacilli); in root nodules, capable of nitrogen fixation; many in symbiosis with plants
  2. Gram-Positive Bacteria
    • Bacillus: many pathogenic
    • Bacillus subtilis
    • Bacillus anthacis (anthrax)
  3. Spirochetes
    • Spirillum: move in corkscrew fasion, some patheogenic
    • Treponema: syphilis
  4. Cyanobacteria ("blue green" bacteria)
    Anabaena: endosymbionts; no chloroplasts, but possess chl a; heterocysts (for nitrogen fixation); may form colonies, reproduce by binary fission
  5. Domain Bacteria - groups include:
    • Proteobacteria
    • Gram-Positive Bacteria
    • Spirochetes
    • Cyanobacteria
  6. Domain Eukarya (protists) - groups include:
    • The Amoebozoa (Rhizopoda)
    • The Alveolata (Trypanosomes, Apicomplexa, Ciliata, Dinoflagellata)
    • The Euglenophyta
    • The Stramenopila (Bacillariophyta, Phaeophyta)
    • The Chlorophyta
  7. Algae groups include:
    • Dinoflagellata
    • Stremenopila (Bicillariophyta, Phaeophyta)
    • Chlorophyta
  8. Amoebozoa (Rhizopoda)
    Amoeba: move by pseodopoida, predators/svagengers; ecto and endoplasm, food vacuoles (by phagocytosis), intracellular digestion, contractile vacuoles
  9. Alveolata
    • Trypanosomes (Kinetoplastida)
    • Apicomplexa
    • Ciliata
    • Dinoflagellata
  10. Trypanasomes (Kinetoplastida) [Alveolata]
    Trypanosoma: sleeping sickness, bite from tsetse fly, extracellular parasite; undulating membrane
  11. Apicomplexa [Alveolata]
    Plasmodium: malaria; intracellular parasites of red blood cells
  12. Ciliata [Alveolata]
    Paramecium: cilia, pellicle, macro/micronucleus, oral groove --> cytostome, food vacuoles
  13. Dinoflagellata [Alveolata]
    Ceratium: grooves, red tide
  14. Euglenophyta
    Euglena: 2 different flagella, form paramylon starch, stigma (eyespot; next to anterior flagellum and acts as a photoreceptor/primitive eye), mixotrophic, reproduce by binary fission
  15. Bacillariophyta [Stramenopila]
    Diatoms: chl a, "golden brown algae," paired and overlapping cell walls (silicon dioxide, calcium carbonates)
  16. Phaeophyta [Stramenopila]
    Kelps/seaweed/"brown algae": multicellular autotrophs; thallus, holdfasts, stipes, blades, air bladder floats
  17. Chlorophyta
    • Volvox: produce daughter colonies asexually (internal); form vegetative cells that have cytoplasmic connections between them; sexually produce by forming a zygospore
    • Spirogyra: filamentous
Card Set
Bacteria/Protist groups
Groups: Unit 11