Notes 17.3

Domains & KingdomsSection 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-likeprotozoans - heterotrophs, animal-like

funguslike - autotrophs· ex. amoebas, slime mold, mildew, euglena

Notes 17.3

Kingdom Fungi· fungus - unicellular or multicellular eukaryote that absorbs nutrients from organic materials in its environment· heterotrophic· lack motility (ability to move)· cell walls with chitin· ex. mushrooms, yeast

Kingdom Plantae· multicellular· cell wall with cellulose· autotrophic (contain chloroplasts for photosynthesis)· lack motility· ex. moss, ferns, trees, flower plants

Animalia· all animals are heterotrophic, multicellular eukaryotes· no cell walls· complex organ systems

Viruses - NOT LIVING· nucleic acid surrounded by a protein· are NOT included in biological classification system