Classification of Living Organisms

Archaebacteria:

- Examples: Thermophiles, methanophiles, and halophiles
- Live in extreme environments like rift vents in the sea, in hot springs, or in extremely acidic waters
- Unicellular
- Prokaryotic
- Get energy by harnessing chemicals in the environment
- Scientists use enzymes from them

Eubacteria:

- Examples: E.Coli and Salmonella
- Live pretty much everywhere
- Unicellular
- Prokaryotic
- Get energy by harnessing chemicals in the environment
- They’re good because they produce vitamins and some foods, but they’re bad because they can also give you diseases like strep throat

Protista:

- Examples: Protozoa and Algae
- Live in water-based environments like water, snow, or damp soil
- Can be unicellular or multicellular
- Eukaryotic
- Some cells get energy through cellular respiration, others through photosynthesis

Carter, J. Stein. __Protista__. 2 Nov. 2004. 17 Feb. 2009 <http://biology.clc.uc.edu/courses/bio106/
     protista.htm>.
Gardiner, Lisa. "The Domain Eubacteria." __Windows to the Universe__. 29 Apr. 2004. 12 Feb. 2009
     <http://www.windows.ucar.edu/tour/link=/earth/Life/classification_eubacteria.html>.
__Introduction to the Archaea__. Berkeley College. 12 Feb. 2009 <http://www.ucmp.berkeley.edu/archaea/
     archaea.html>.
__The Six Kingdoms__. 17 Feb. 2009 <http://www.ric.edu/faculty/ptiskus/Six_Kingdoms/Index.htm>.