Amoeba

Amoeba (plural = amoebae) is a well known genus of unicellular organism, a protist. One of its most common species, the Amoeba Proteus, is about 0.2 to 0.3 mm large. The amoeba was first discovered by August Von Rosenhof in 1757.  It is a genus of protozoa that moves with false feet, called pseudopodia.

The amoeba is a member of a whole group of amoeboid eukaryotic protists called Amoebozoa. They are heterotrophs, eating bacteria and other protists.

The pseudopodia (false feet) are extensions of the organism's cell membrane. They are used by the amoeba for phagocytosis (active food/nutrient intake) and motility (self-propelled movement).

 Life 
Amoebae are often found within freshwater, typically on vegetation in decay in still or slow moving water, or in the benthic zone (the flora and fauna found at the bottom of the sea or lake ) of some lakes. However, they are common organisms of study because it is easy to keep them in a laboratory. They are used to study sex
protozoa and to demonstrate cell structure and function.

 Other websites 
 Wikibooks: compare size of cells
 Amoeba info

 References 

Category:Protozoa