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Chapter 4: The Organization of Life Section 3: The Diversity of Living Things
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Domains Taxonomy is a branch of science dedicated to the classification of living things. Domains are the largest taxonomic groups. The three Domains are: Archaeabacteria Eubacteria Eukarya
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Kingdoms Kingdoms are the second largest taxonomic group. Archaebacteria has only one kingdom called Archaebacteria. Eubacteria has only one kingdom called Bacteria. Eukarya has four kingdoms: Animalia, Plantae, Fungi, Protista
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Domains and Kingdoms
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Archaebacteria Unicellular Cells lack Nucleus Reproduce by dividing in half. Found in extreme environments. Hot Springs Salt Lakes
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Eubacteria Bacteria Unicellular Cells lack Nucleus Reproduce by dividing in half. Very common, found everywhere.
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Eukarya Organisms in Eukarya can be: Unicellular or Multicellular Their cells contain a Nucleus. Can reproduce: Sexually or Asexually
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Eukarya Animalia Multicellular Cells have Nucleus No cell walls Ingest their food. Live on land and water.
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Eukarya Plantae Multicellular Cells have Nucleus Have Cell Walls Make their own food through Photosynthesis.
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Eukarya Fungi Multicellular Cell have Nucleus Have Cell Walls Absorb food through their body surface. Usually from dead organisms.
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Eukarya Protista Can be Multicellular but most are Unicellular. Most live in water. Some have animal like behavior. Ingest food. Others have plant like behavior. Use Photosynthesis
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