1. Classification/Taxonomy
Chapter 17

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

3. 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

4. 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

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

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

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

8. 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

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

10. Slime Mold

11. 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

12. 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

13. 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

14. 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

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

16. 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

17. The End.