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18-‐3 Kingdoms & Domains I. Tree of Life – 6 Kingdoms 1. Kingdom Eubacteria • Single Celled Prokaryotes • Cell walls made of pepGdoglycan 2. Kingdom Archaebacteria • Single-‐celled prokaryotes • NO pepGdoglycan in the cell walls 3. Kingdom ProGsta • Eukaryotes, most are unicellular • 3 groups – Animal-‐like proGsts – Plant-‐like proGsts – Fungus-‐like proGsts • Examples: red algae, green algae, ameoba, paramecium 4. Kingdom Fungi • Most are mulGcellular, eukaryotes • Cell walls made of chiGn • Get food by absorbing nutrients from decaying maTer 5. Kingdom Plantae • MulGcellular, eukaryotes • Cell walls made of cellulose • Make their own food through photosynthesis 6. Kingdom Animalia • MulGcellular, eukaryotes • NO cell walls • Obtain food by eaGng other organisms II. Three Domain System A. Domain Bacteria • Unicellular, prokaryotes • PepGdoglycan in cell wall • Free-‐living, cause disease, some need oxygen to survive, some do not B. Domain Archaea • • • • • Unicellular, prokaryotes Do NOT have pepGdoglycan in cell walls Live in extreme environments Usually CANNOT be exposed to oxygen Found near volcanic vents, brine pools, acidic environments C. Domain Eukarya • All organisms that have a cell nucleus • ProGsts, fungi, plants, and animals
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