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Biology 18.3
 

Biology 18.3

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    Biology 18.3 Biology 18.3 Presentation Transcript

    • Kingdoms and Domains 18.3
    • Domain
      Most inclusive taxonomic category; larger than a kingdom.
    • Bacteria
      Domain of unicellular prokaryotes that have cell walls containing peptidoglycan.
    • Eubacteria
      Kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan.
    • Archaea
      Domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.
    • Archaebacteria
      Kingdom of unicellular prokaryotes whose cell walls that do not contain peptidoglycan.
    • Eukarya
      Domain of all organisms whose cells have nuclei, including protists, plants, fungi, and animals.
    • Protista
      Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.
    • Fungi
      Kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.
    • Plantae
      Kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose.
    • Animalia
      Kingdom of multicellular eukaryotic heterotrophs whose cells do not have cell walls.
    • Key Concept
      What are the six kingdoms of life as they are now identified?
      The six-kingdom system of classification includes the kingdoms Eubacteria, Archaebacteria, Protista, Fungi, Plantae, and Animalia.
    • Key Concept
      What is the three-domain system of classification?
      The three domains are the domain Eukarya, Which is composed of protists, fungi, plants, and animals; the domain Bacteria, which corresponds to the kingdom Eubacteria; and the domain Archaea, which corresponds to the kingdom Archaebacteria.