Review:
­
characteristics of living things
­
classification systems (taxonomy)
­
history of classification system
Nov 12­2:38 PM
The Three Domains of Life
­
domains are above kingdoms
(a) Domain Bacteria: Kingdom bacteria
(b) Domain Archaea: Kingdom Archaea
(c) Domain Eukarya: Kingdoms Protista, Fungi, Plantae, Animalia
Nov 12­2:40 PM
1
Common Characteristic of the Kingdoms
(a) Plantae: multi­cellular, specialized tissues and organs, photosynthetic autotrophs, most are non­motile (can't move)
Nov 12­2:42 PM
(b) Animalia: multi­cellular, specialized tissues and organs, heterotrophs, most are motile
Nov 12­2:44 PM
2
(c) Fungi:
unicellular or multi­cellular, autotrophs or heterotrophs, some are motile
Nov 12­2:45 PM
(d) Protista: unicellular, colonial or multi­cellular, autotrophs or heterotrophs, some are motile
Nov 12­2:46 PM
3
(e) Bacteria: majority are unicellular, some are colonial or link up in chains to form filaments, autotrophs or heterotrophs, microscopic, no membrane bound organelles (prokaryotic) movement by flagella or no movement at all, 3 main shapes­ cocci (round), bacilli (rod shaped) and spirilli (spiral shaped)
Nov 12­2:47 PM
(f) Archaea:
Survive in extreme condition such as hot springs volcanoes, etc, biochemically and genetically different from bacteria but share the 3 main shapes
Nov 12­2:49 PM
4
Modern Taxonomy
­
founder is considered to be Carolus Linnaeus (1707 ­ 1778)
­
based his system on the structural similarities in organisms
­
each group is called a taxon (pl. taxa)
­
taxa are arranged from the largest division (kingdom) to the smallest (species)
­
this provides a checklist to identify an organism
Nov 12­2:51 PM
Readings:
Pages 106 ­ 109
Questions:
Page 107: #'s 5,8
Nov 12­2:55 PM
5