Osmosis is the spontaneous net movement of water through a semipermeable membrane from a region of low solute concentration to a solution with a high solute concentration, up a solute concentration gradient.
Osmosis is the diffusion of a solvent through a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.
osmosis
diffusion of substances through a semipermeable membrane
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Definition of osmosis :
Bulk flow of water through a semipermeable membrane into another aqueous compartment containing solute at a higher concentration.
If osmosis continues and becomes excessive the cell will eventually burst. In a plant cell, excessive osmosis is prevented due to the osmotic pressure exerted by the cell wall thereby stabilizing the cell.
Testing the Chemiosmosis Theory
Several kinds of evidence support the chemiosmotic theory of ATP synthesis in chloroplasts.
Link to discussion of the chemiosmosis in chloroplasts.
OSMOSIS
Another big example of passive transport is osmosis. This is a water specific process. Usually, cells are in an environment where there is one concentration of ions outside and one inside.
osmosis Diffusion of water molecules across a membrane in response to differences in solute concentration. Water moves from areas of high-water/low-solute concentration to areas of low-water/high-solute concentration.
Osmosis
Osmosis is the diffusion of water across a differentially permeable membrane (see "Diffusion" above).
osmosis
(oz-moh-sis) [Gk. osmos, impulse, thrust]
The diffusion of water across a selectively permeable membrane.
osmotic potential ...
Osmosis The movement of a solvent across a membrane in the direction that tends to equalize concentrations of solute on the two sides of the membrane.
chemiosmosis The process by which ATP is produced in the inner membrane of a mitochondrion.
Osmosis. The movement of pure water across a membrane from a compartment with relatively low dissolved ions to a compartment with higher concentrations of dissolved ions ...
osmosis; diffusion
The Biology Project > Cell Biology > Cell Membranes > Problem Set ...
osmosis - movement of solvent from low concentration of solute molecules to high concentration of solute molecules. The solvent moves from a hypotonic to a hypertonic solution.
osmosis The movement of water through a selectively permeable membrane due to the existence of a concentration gradient.
Molarity and Osmosis Lab
The following lab is based on a lab created by the Texas A&M University Physiology and Pharmacology Department. The lab was originally designed for osmolarity, however it lends itself rather well to molarity.
In water they swell up, lose their shape, and become globular (endosmosis) (Fig. 453, c). Subsequently the hemoglobin is dissolved out, and the envelope can barely be distinguished as a faint circular outline.
10 Steps of Glycolysis
Cellular Respiration
Diffusion, Passive Transport, and Osmosis
DNA Transcription
Translation
Programmed Cell Death ...
 See also: Membrane, Trans, Cells, Cell, Protein
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