Encyclopedia > Spirochaete

  Article Content

Spirochaete

The spirochaetes are a group of distinctive bacteria, which have long, helically coiled cells. They are distinguished by the presence of flagella running lengthwise between the cell membrane and cell wall, called axial filaments. These cause a twisting motion which allows the spirochaete to move about. Most spirochaetes are free-living and anaerobic, but there are numerous exceptions. A few are important pathogens, for instance Treponema pallidum, which causes syphilis.

It has been suggested by Lynn Margulis that eukaryotic flagella were derived from symbiotic spirochaetes, but few biologists accept this, as there is no close structural similarity between the two.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Jamesport, New York

... every 100 females age 18 and over, there are 97.9 males. The median income for a household in the town is $67,891, and the median income for a family is $80,748. Males have ...

 
 
 
This page was created in 36.3 ms