1. Saccharomyces cereviceae Common name: yeast Eukaryotic Unicellular Cell wall made of chitin Heterotrophic decomposer Asexual reproduction by budding Facultative anaerobe 6,275 genes In nature, found on plants, fruits, and grains Used to make bread, beer, and wine Contributor: Gordon Beakes © University of Newcastle upon Tyne image courtesy Centre for Bioscience, the Higher Education Academy, ImageBank http://www.bioscience.heacademy.ac.uk/imagebank/ http://www.bioscience.heacademy.ac.uk/imagebank/

2. Thermotoga maritima Prokaryotic Unicellular Heterotrophic scavenger Thermophilic Gram-negative Anaerobic using sulfur instead of oxygen Found in deep sea vents and non-marine hot springs 1,879 genes http://www.palaeos.com/Kingdoms/Prokaryotes/Images/ Thermotoga.GIF

3. Escherichia coli Prokaryotic Unicellular Rod-shaped Heterotrophic Gram-negative Facultative anaerobic Found in the intestinal tract Asexual reproduction by binary fission 4377 genes http://en.wikipedia.org/wiki/Image:EscherichiaColi_NIAID.jpg

4. Methanococcus Prokaryotic Unicellular Autotrophic Mesophilic Cocci-shaped Gram-negative Anaerobic Produces methane Found in the deep sea vents, marshes, and intestinal tract http://microbewiki.kenyon.edu/images/thumb/2/22/M ethanococcus_6.gif/300px-Methanococcus_6.gif

5. Sulfolobus sulfataricus Prokaryotic Unicellular Thermophilic Chemotrophic or heterotrophic using sulfur Found in volcanic areas with low http://en.wikipedia.org/wiki/Image:RT8-4.jpg

6. Synechococcus elongates (previously known as Anacystis nidulans ) Prokaryotic Unicellular Autotrophic cyanobacteria Primary producer Found in marine and freshwater environments Has one circular chromosome and two plasmid http://commons.wikimedia.org/wiki/Image:Synechoc occus_TEM.jpg

7. Thermococcus Prokaryotic Unicellular Obligate heterotroph using sulfur Anaerobic Thermophilic Highly motile with multiple flagella Thermococcus Image by K.O.Stetter & R.Rachel, Univ.Regensburg. http://microbewiki.kenyon.edu/index.php/Thermococ cusK.O.Stetter & R.Rachel, Univ.Regensburg.

8. Homo sapiens Common Name: John and Jane Doe, etc Eukaryotic Multicellular Heterotroph Aerobic Not motile, but highly mobile Sexual Reproduction Mesophilic Found in all terrestrial environments http://en.wikipedia.org/wiki/Image:Skeleton_diagram.svg

9. Zea mays Common name: Maize Eukaryotic Autotrophic Multicellular Domesticated in ~6,500 BC Used as food for human and animal http://en.wikipedia.org/wiki/Image:Zea_mays.jpg The photo is image number K8712-1 at the USDA Agricultural Research Service, by Keith Weller.K8712-1