1. Domains of Life
Refer to Domains Chart

2. The 3 Domains

3. Modern Classification
We now use a system with the largest groups called Domains.
The kingdoms of life all fall into one of three domains:
Bacteria
Archaea
Eukarya

4. Modern Classification
Traditionally we still break living things into 6 Kingdoms, but this is under great dispute as we continue to gather DNA evidence on eukaryotes and find new prokaryotic life deep in the soil and deep in the ocean. There could be 20 or even 30 different Kingdoms!

5. 1. Kingdom Bacteria Prokaryotes (no nucleus) One cell (unicellular)
Cell walls with peptidoglycan
Autotrophs (producers) or Heterotrophs (consumers, decomposers)
Common bacteria, cyanobacteria
Very diverse (divided into multiple bacteria kingdoms)

6. 2. Kingdom Archaea
Prokaryotes (no nucleus)
One cell (unicellular)
Cell walls but no peptidoglycan
Autotrophs (producers = make own food) or
Heterotrophs (need to eat others)
Live in extreme environments
(hot, cold, no oxygen)
Very diverse (divided into multiple Archaea kingdoms)

7. 3. Kingdom Fungi Eukaryotes Most multicellular; some unicellular
(cells with nucleus and membrane-bound organelles)
Most multicellular; some unicellular
Cell wall made of chitin (a carbohydrate)
Heterotrophs
- consumers
- decomposers
Mushrooms,
yeasts, molds

8. Mold
Yeast

9. 4. Kingdom Plantae Eukaryotes All multicellular
(cells with nucleus and membrane-bound organelles)
All multicellular
Cell wall made of cellulose (a carbohydrate)
Autotrophs (have chloroplasts) - producers
Mosses, ferns,
flowering plants,
conifers (needles
and cones)

10. Mosses Ferns
Conifers (needles, cones)

11. 5. Kingdom Animalia Eukaryotes All multicellular NO cell wall
(cells with nucleus and membrane-bound organelles)
All multicellular
NO cell wall
Heterotrophs (consumers)
Sponges, jellyfish, coral,
worms, starfish, clams,
crabs, fishes, sharks, frogs,
salamanders, lizards, turtles,
birds, mammals
Typical Sponge

12. Coral Reef: sponges, coral, sea anemones, fish, arthropods

13. Sponges, sea anemones, jellyfish, Worms, mussels, squid, octopus, shrimp, starfish, sea urchins.
All the chordates: Fish, amphibians, reptiles, birds, mammals

14. 6. Kingdom(s) Protista Eukaryotes
(cells with nucleus and membrane-bound organelles)
Most with one cell (unicellular); some with many cells (multicellular)
Cell walls of various compositions
Autotrophs (producers) or Heterotrophs (consumers)
Amoebas, Paramecium, Slime molds, Algae, Seaweed
“Trash Can” group:
If it has a nucleus but isn’t a fungus, plant or animal then it must be a protist!
Very diverse (divided into multiple protist kingdoms)

15. Amoeba Slime mold
Paramecium Kelp (seaweed)

16. Assignment
Finish Domains chart worksheet