Classification

• When did Carl Linnaeus propose his classification system?

  In the 1700's
• State the structure of Carl Linnaeus's classification system:

  Kingdom

  Phylum

  Class

  Order

  Family

  Genus

  Species
• What improved that could allow scientists to propose new models of classification?

  • Biochemical processes taking place inside organisms developed
  • Microscopes improved
• Who proposes the three-domain system?

  Carl Woese
• How did Carl Woese propose the three-domain system?

  By using evidence from new chemical analysis techniques e.g the RNA sequence analysis.
• What did Carl Woese discover?

  That species thought to be closely related are not as closely related as thought
• State the 3 domain system and state examples of each

  Archaea - Primitive bacteria (Found in extreme places, e.g hot springs and salt lakes)

  Bacteria - True bacteria, such as E-coli and Staphylococcus

  Eukaryota - Broad range of organisms, including fungi, plants, animals and protists
• State the meaning of the 1st and 2nd part of an organism's Binominal name

  1st part - Refers to the genus that the organism belongs to, giving you information on the organism's ancestry

  2nd part- Refers to the species, e.g humans being known as Homo Sapiens. 'Sapiens', referring to the species
• Complete the classification system with the name:

  Domain - Eukaryota

  Kingdom - Animala

  Phylum - Chordata

  Class - Mammalia

  Order - Carnivora

  Family - Ursidae

  Genus - Ursus

  Species - Martimus