Encyclopedia > Turgor

  Article Content

Turgor

Turgor (also called turgor pressure or osmotic pressure) is the pressure that can build in a space that is enclosed by a membrane that is permeable to a solvent such as water but not to solutes.

A biological cell, for example a plant cell, contains ions, sugars, amino acids, and other substances. In a hypertonic environment, water flows across the plasma membrane into the cell (since the concentration of water is lower inside the cell than outside), causing it to expand. The cell wall of a plant cell restricts the expansion, causing the cell to press against the wall. The resulting pressure is called turgor.

See also: Pfeffer cell[?] -- cell wall



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
Live At Dusseldorf, Germany

... Little Monster tour of Social Distortion's second album. Tracks Mass Hysteria It Wasn't A Pretty Picture Under My Thumb Indulgence On My Nerves Lawless I Want ...