Unicellular

A Unicellular organism is an organism consisting of only a single cell. Example of a unicellular organism include <a href="Protozoa">Protozoa</a> such as <a href="Amoeba">amoeba</a>, <a href="Cilia">cilia</a> and <a href="Paramecium Cells">paramecium</a>. World of Microbiology and Immunology (2003) Protozoa http://www.encyclopedia.com/topic/Protozoa.aspx Last accessed 23 October 2015 . Unicellular organisms are often used as models to study various processes that occur in the eukaryotic cell. One such example is <a href="Saccharomyces cerevisiae">Saccharomyces cerivisiae</a>, one of the most common used by biologists, and is used to study processes such as <a href="Mitosis">mitosis</a> and <a href="Meiosis">meiosis</a>Alberts, Bruce. Molecular Biology Of The Cell, 5Th Edition. New York: Garland Science, 2008. Page 33. Unicellular organisms allow us to study much larger, more complex systems by first looking at how things function at the cellular level.