Flagella eukaryotic structure

Cilia 10,15. See also flagella eukaryotic structure 15 Ciliophora 19 Cinnamic acid 756s Cinnamoyl-CoA thiol esters 682 Circular dichroism (CD)... 

It is informative to compare these dimensions with those of the smallest structures visible in cells for example, a bacterial flagellum is -13 nm in diameter and a cell membrane -8-10 nm in thickness. Bricks of the size of the 300-residue polypeptide could be used to assemble a bacterial flagellum or a eukaryotic microtubule. Helical polypeptides may extend through cell membranes and project on both sides, while a globular protein of the same chain length may be almost completely embedded in the membrane. 

Cilia and flagella are stable microtubule-based structures which project from the plasma membranes of particular eukaryotic cells. The energy-dependent oscillations of these structures can drive material over the surface of a cell or propel the cell along. For example, the whip-like motions of cilia on the cells at the head of the fallopian tube draw newly released ova from the ovaries into and along the oviduct. The snake-like movements of the flagellum on a sperm provide these cells with movement. 

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