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Kingdoms and Domains
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HOW DO WE ORGANIZE LIVING THINGS?• We name all organisms using many names:
• K ingdom Keep• P hylum Ponds• C lass Clean• O rder Or• F amily Froggies• G enus Get• S pecies Sick
• Each level is called a “taxon”
specific
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Classifying KingdomsNutrition Heterotrophic
-consumes living or dead organisms to obtain energy
Autotrophic-uses sun’s energy-makes own food
# of cells Unicellular-one cell
Multicellular-more than one cell-many cells
Reproduction Asexual-offspring produced from a single parent (genetically identical to parent)
Sexual-production of offspring from fusion of 2 sex cells (offspring differ from parents)
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Classifying KingdomsHabitat -where does the
organism live?
Cell Type Prokaryotic Eukaryotic
-circular chromosome (plasmid)-no membrane bound organelles (e.g. no true nucleus)-very small (less than 2 um)-reproduce by binary fission
-double stranded chromosomes in nucleus-membrane bound organelles
-larger (10-100 um)
-reproduce by mitosis or meiosis
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SIX KINGDOMS
• Each kingdom hasmany phyla
• Each phylum has many classes
• Each class has manyorders
• Etc.
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Archaebacteria
• are ancient bacteria• live in extreme environments• Prokaryotes
• Halophiles (salt marshes),• Acidophiles (acidic environments),• Thermophiles (hot springs)
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Eubacteria
• bacteria with a broad habitat range• prokaryotes
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Protista
• are mostly single celled• eukaryotes (have nucleus).
• animallike, plantlike with chloroplasts, and fungilike• Examples are paramecium, amoeba, algae.
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Fungi
• once classified as plants
• however cell walls composed of chitin (not cellulose)• are heterotrophic (consume)• multicellular
• Examples are mould, yeast, mushrooms.
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Plantae
• multicellular autotrophic (produce carbohydrates by photosynthesis) organisms
• Cell walls are composed of cellulose.• Examples are mosses, trees, ferns…
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Animalia
• multicellular heterotrophic organisms• no cell wall
• subdivided into invertebrates and vertebrates
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Apparently, the primordial cell was a Pac Man ghost???
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Domains of Life
Eubacteria ArchaeaProtista Plants
Animals Fungi
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DOMAIN: 1. Eubacteria 2. Archaea 3. Eukaryotes
KINGDOM: 1. Eubacteria 2. Archaea 3. Protista 4. Fungi 5. Plants 6. Animals
Cell Type: Prokaryotic Prokaryotic Eukaryotic Eukaryotic Eukaryotic Eukaryotic
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Your Turn
• Complete Kingdom worksheet from Friday and questions on back