Classification/Taxonomy Chapter 17

The Three-Domain System There are 3 Domains: Domain Bacteria Domain Archaea Domain Eukarya There are 6 Kingdoms: 1. Eubacteria 2. Archaebacteria 3. Protista 4. Fungi 5. Plantae 6. Animalia

The Three-Domain System There are 3 Domains: Domain Bacteria Kingdom Eubacteria Unicellular/Prokaryotes Cell walls have Peptidoglycan Domain Archaea Kingdom Archaebacteria Cell walls withOUT Peptidoglycan Domain Eukarya Kingdoms Protista, Fungi, Plantae, Animalia

Kingdom Archaebacteria Domain Archaea Kingdom Archaebacteria Unicellular Prokaryote Cell walls withOUT Peptidoglycan Extremophiles – Love extreme environments like volcanoes, hydrothermal vents, and hot springs Archaea Hydrothermal Vent Hot Spring Volcano

Kingdom Eubacteria Unicellular Prokaryote Domain Bacteria Kingdom Eubacteria Unicellular Prokaryote Cell walls with Peptidoglycan All other bacteria you encounter everyday E. coli Staphlycoccus Streptococcus

Kingdom Protista Unicellular or Multicellular Live in colonies Domain Eukarya Kingdom Protista Video Clip: Amoeba Unicellular or Multicellular Live in colonies Amoeba Euglena Paramecium

Plant-like Protists Algae Euglena Live in shallow water Photosynthetic (autotrophic) Can also be heterotrophic when light not available Absorb nutrients Ingest other organisms

3 Categories of Protista Plant-like Example: Algae Perform photosynthesis (autotrophs) Animal-like Example: Amoeba Can cause disease (malaria, sleeping sickness) Fungus-like Example: Slime molds

Animal-like Protists Also called Protozoans 4 Types Ciliates (Example: Paramecium) Sarcodina (Example: Amoeba) Zooflagellates Sporozoans

Slime Mold

Kingdom Fungi Unicellular or Multicellular Cell walls made of Chitin Domain Eukarya Unicellular or Multicellular Cell walls made of Chitin Heterotrophs….they eat! Yeast Mushrooms

Kingdom Fungi Can reproduce sexually & asexually Domain Eukarya Can reproduce sexually & asexually Usually reproduce asexually Yeast reproduce asexually by budding However, under unfavorable conditions (such as drought) fungi reproduce sexually

Kingdom Fungi Hyphae Thread-like structures which form all parts of the fungus Main function is to help fungus obtain food – provide large surface area for absorption of nutrients

Kingdom Plantae Multicellular Cell walls made of Cellulose Domain Eukarya Multicellular Cell walls made of Cellulose Autotrophs….make their own food Trees & Grass Moss Venus Fly Trap

Kingdom Animalia Multicellular NO cell walls Heterotrophs….they eat Domain Eukarya Multicellular NO cell walls Heterotrophs….they eat Worms Insects Jellyfish Giraffes

Release enzymes to digest food 6 Kingdoms Eubacteria Archaebacteria Protista Fungi Plantae Animalia Prokaryote Prokaryote Eukaryote Eukaryote Eukaryote Eukaryote Unicellular, Multicellular, Colonial Unicellular (Yeast), Multicellular Unicellular Unicellular Multicellular Multicellular Peptidoglycan No Peptidoglycan Chitin Cellulose No Cell Wall Autotroph or heterotroph Autotroph or heterotroph Autotroph or heterotroph Heterotroph Autotroph Heterotroph Release enzymes to digest food “Ancient Bacteria” Includes Algae “Junk Drawer" Chloroplasts Most common bacteria Live in very hot places E. ecoli Pyrococcus furiosus Paramecium H. coccinea Fern frod Homo sapiens

The End.