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Some eukaryotic cells move about by means of microtubules attached to the exterior of the plasma membrane. These microtubules are called flagella and cilia. Flagella and cilia both have the same structure: a ring of nine tubulin triplets arranged around two tubulin subunits. The difference between flagella and cilia lies in their movement and numbers. Flagella are attached to the cell by a "crank"-like apparatus that allows the flagella to rotate. Usually, a flagellated cell has only one or two flagella. Cilia, on the other hand, are not attached with a "crank," and beat back and forth to provide movement. Ciliated cells usually have hundreds of these projections that cover their surfaces. For example, the protist Paramecium moves by means of a single flagellum, while the protist Didinium is covered with numerous cilia. Read more: Cell - The Cytoskeleton - Microtubules, Cells, Filaments, Flagella, Cilia, and Tubulin http://science.jrank.org/pages/1316/Cell-cytoskeleton.html#ixzz1SI2pVtUp
Flagellin is the protein which makes up the bacterial flagella (as described above). Tubulin is a globular protein which makes up microtubules, hollow rods which help support the cell, among other functions. Type "flagellin" and "tubulin" into google and you will find much more info.