1. The classification of living organisms
Taxonomy
The classification of living organisms

2. Today’s two word naming system is called Binomial Nomenclature
Developed by Carolus Linnaeus
Classification is based on:
a. Physical & structural characteristics
b. Evolutionary relationships

3. Organisms are identified by two terms
The Genus is always capitalized and the species is always lowercased.
Scientific names should be UNDERLINED if handwritten or in italics if typed.
Ex. Homo sapien

4. Taxa: Levels of organization
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

5. Domain is the Largest group while species is the smallest and most specific group.

6. Taxonomy video Taxa for Humans Domain: Eukarya Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: sapiens
Taxonomy video

7. Cladogram
Shows the evolutionary relationships between organisms, with the oldest organism at one end and each animal being more evolved than the last
Constructing a
cladogram video

8. Dichotomous Key
Groups larger groups into two smaller groups; to be used for identifying organisms

9. Taxa- groups There are currently 3 domains and 6 kingdoms
(There used to be 0 domains and 5 kingdoms: Monera, Protista, Fungi, Plantae, and Animalia)
Organisms are classified by cell type, cell number, and mode of nutrition
Autotrophs: make their own food
Heterotrophs: must consume food in order to get energy

10. 3 Domains 1. Bacteria– most common bacteria
2. Archeabacteria-- weird…live in Extreme environments
3. Eukarya– “Life as we know it”
Prokaryote– Primitive cell without a nucleus… “pro, no”
Eukaryote- more complex cell with a nucleus
“Eu, you”

11. Domain Bacteria Kingdom Eubacteria: Cell type: prokaryote
Six Kingdoms Video
Kingdom Eubacteria:
Cell type: prokaryote
# of cells: unicellular
Mode of nutrition: Autotroph or heterotroph
Examples: E. Coli, Streptococcus

12. Domain Archaea Kingdom: Archaebacteria Cell type: Prokaryote
# of cells: Unicellular
Mode of nutrition: Autotroph or heterotroph
Examples: Methanogens… called the extremophiles

13. Domain Eukarya Kingdom: Protista Cell type: eukaryote
Number of cells: mostly unicellular, some multicellular or colonial
Mode of nutrition:
autotroph or
heterotroph
Examples: Amoeba,
Paramecium

14. Domain Eukarya Kingdom: Fungi Cell type: Eukaryote
Number of cells: mostly multi/ some unicellular
Mode of nutrition: heterotrophs
Examples: Mushrooms, mold, yeast

15. Domain Eukarya Kingdom: Plantae Cell type: Eukaryote
Number of cells: Multicellular
Mode of nutrition: autotroph
Examples: kelp, flowering plants, pine trees

16. Life as we know it Video Domain Eukarya Kingdom: Animalia
Cell type: Eukaryote
Number of cells: multicellular
Mode of nutrition: heterotroph
Examples: Sponges, worms, fish
humans
Life as we know it
Video