Biology 18.3

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Biology 18.3

  1. 1. Kingdoms and Domains 18.3
  2. 2. Domain • Most inclusive taxonomic category; larger than a kingdom.
  3. 3. Bacteria • Domain of unicellular prokaryotes that have cell walls containing peptidoglycan.
  4. 4. Eubacteria • Kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan.
  5. 5. Archaea • Domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.
  6. 6. Archaebacteria • Kingdom of unicellular prokaryotes whose cell walls that do not contain peptidoglycan.
  7. 7. Eukarya • Domain of all organisms whose cells have nuclei, including protists, plants, fungi, and animals.
  8. 8. Protista • Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.
  9. 9. Fungi • Kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.
  10. 10. Plantae • Kingdom of multicellular photosynthetic autotrophs that have cell walls containing cellulose.
  11. 11. Animalia • Kingdom of multicellular eukaryotic heterotrophs whose cells do not have cell walls.
  12. 12. 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.
  13. 13. 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.

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