Thursday, January 26, 2012

What is Motility in prokaryotic cells

Have you ever wondered how cells move around?  The process of a cell moving around is called Motility.  In the prokarytoic cells they move around in 3 different ways:

  1. Flagella is the first way they can move around.  Flagella are long and thin, they extend past the surface and their glycocalyx.  They help propel the cell body through its environment.  There are 4 different types of flagella.  Monotrichous, amphitrichous, lophotrichous, and peritichous.  

2.  Fimbriae is the second form in which they move.  Fimbriae are sticky, shorter and abundant.  The    stickiness of their bristles help them to adhere to each other and environment.  Also, when in the biofilm they play an important role by conducting electrical signals among the cells in the biofilm.  Thus, helping in communication.  

3.  Pili does not necessarily move the cell around, but it does help in a different way.  Pili are mid-length between flagella and fimbriae.  They are also know as conjugation pili because they help mediate the transfer of DNA from one cell to another.  







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