Notes 17.3 Domains & Kingdoms Section 17.3 Domain Bacteria E. coli · Kingdom - Eubacteria · prokaryotic · unicellular · autotrophic or heterotrophic · cell walls contain peptidoglycan (chain of a alternating sugars; porous but strong) · ex. E. coli, Lactobacillus acidophilus Lactobacillus acidophilus Domain Archaea · Kingdom - Archaea · ancient, but more closely related to Eukarya · prokaryotic · cells walls WITHOUT peptidoglycan · unicellular · autotropic or heterotrophic · extremophiles - live in extreme environments · ex. Methanogens halophiles (loves salt) Methanogens halophiles Domain Eukarya · Kingdoms - Protista, Fungi, Plantae, & Animalia · all eukaryotic Kingdom Protista · protists - eukaryotic organisms that can be unicellular, colonial, or multicellular · NO organs · 3 groups algae - autotrophs, plant-like protozoans - heterotrophs, animal-like funguslike - autotrophs · ex. amoebas, slime mold, mildew, euglena