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
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. 2. Archeabacteria-- weird…live in Extreme places
3 Domains
1. Bacteria– most common bacteria
2. Archeabacteria-- weird…live in Extreme places
3. Eukarya– “Life as we know it”

11. Prokaryote– Primitive cell without a nucleus… “pro, no”
3 Domains
Prokaryote– Primitive cell without a nucleus… “pro, no”
Eukaryote- more complex cell with a nucleus
“Eu, you”

12. Domain Bacteria Kingdom Eubacteria: Cell type: prokaryote
# of cells: unicellular
Mode of nutrition: Autotroph or heterotroph
Examples: E. Coli, Strep

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

14. Domain Eukarya Kingdom: Protista Cell type: eukaryote
Number of cells: Unicellular
Mode of nutrition:
autotroph or
heterotroph
Examples: Amoeba

15. Six Kingdoms Video 6

16. Domain Eukarya
Kingdom: Fungi
Cell type: Eukaryote
Number of cells: most multicellular
Mode of nutrition: heterotrophs
Examples: Mushrooms and molds

17. Number of cells: Multicellular Mode of nutrition: autotroph
Domain Eukarya
Kingdom: Plantae
Cell type: Eukaryote
Number of cells: Multicellular
Mode of nutrition: autotroph
Examples: flowers, pine trees

18. Domain Eukarya
Kingdom: Animalia
Cell type: Eukaryote
Number of cells: multicellular
Mode of nutrition: heterotroph
Examples: Sponges, frog