Navigation Links

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 hypotonic 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.

The osmotic pressure π of a dilute solution can be calculated using the formula


M is the molarity
R is the molar gas constant
T is absolute temperature (i.e. measured in kelvin).

Note the similarity of the above formula to the ideal gas law.

See also


(Date:2/24/2015)... 24, 2015 Research and Markets ... the "Global 2D Gesture Recognition Market 2015-2019" ... The analysts forecast the Global 2D Gesture Recognition ... over the period 2014-2019 The increased ... is one of the major trends in the ...
(Date:2/12/2015)... , Feb. 12, 2015   MedNet Solutions ... in clinical study management systems, has recently bolstered ... further distinguishing iMedNet as ... Organizations (CROs) and healthcare consultants.  Building on the ... customer referrals and numerous co-marketing opportunities), MedNet,s new ...
(Date:2/5/2015)... PARK, North Carolina , 5. Februar ... 35. Jahr als spezialisiertes Logistikunternehmen und hat ... als einzige klinische Logistikfirma (Clinical Logistics Organization ... Kernbotschaft der neuen Kampagne lautet First ... Lieferungen. Foto: ...
Breaking Biology News(10 mins):Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2MedNet Solutions Announces Key Enhancements To Its iMedNet Partner Program 2Marken startet Kampagne mit Patienten im Mittelpunkt 2Marken startet Kampagne mit Patienten im Mittelpunkt 3
... first time, scientists have shown that amniotic fluid (the ... new source of stem cells for therapeutic applications. The ... Blood , the official journal of the American ... other scientists, our research team wondered whether stem cells ...
... that its latest journal, Disease Models & Mechanisms ... MEDLINE. MEDLINE ( is the premier bibliographic database of ... National Institutes of Health (NIH), MEDLINE contains over 16 million ... DMM has been recommended for inclusion by ...
... Md. (Mar. 31, 2009) Octogenarian women were unable to ... targeted at strengthening the thigh muscle, according to a ... . The results are surprising because previous studies have ... for people who are into their 70s. An increase ...
Cached Biology News:Amniotic fluid may provide new source of stem cells for future therapies 2Amniotic fluid may provide new source of stem cells for future therapies 3Disease Models & Mechanisms -- selected for indexing in Medline 2As good as it gets: Octogenarian muscles don't get stronger with exercise 2As good as it gets: Octogenarian muscles don't get stronger with exercise 3
Other biology definitionOther Tags