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<h1>Chapter Three: Cell biology</h1>
<h3>Cytoplasm - Specialty structures - Cillia and flagella</h3>
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	These are hair like extentions off of the cell membrane. Their structures are
 	similar except that cillia tend to be small and numerous and flagella
	tent to be large and fewer. Their they beat back and forth rythmically. In 
	unicellular organisms their job is locomotion. In large	multicell organisms
	their role is to move fluid past the cell. Notice the 9+2 arrangement
	of the microtubles.
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