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In chemical biology, tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a partially-permeable cell membrane. Tonicity depends on the relative concentration of selective membrane-impermeable solutes across a cell membrane which determine the direction and extent of osmotic flux .
If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple.
Osmolarity and tonicity are related but distinct concepts. Thus, the terms ending in -osmotic (isosmotic, hyperosmotic, hypoosmotic) are not synonymous with the terms ending in -tonic (isotonic, hypertonic, hypotonic). The terms are related in that they both compare the solute concentrations of two solutions separated by a membrane.
List of plants by common name; List of plant family names with etymologies; List of plants known as arugula; List of plants known as breadfruit; List of plants known as bottlebrush; List of plants known as buckthorn; List of plants known as cedar; List of plants known as chickweed; List of plants known as compass plant; List of plants known as ...
Plasmolysis is the term which describes plant cells when the cytoplasm shrinks from the cell wall in a hypertonic environment. In plasmolysis, the cell wall stays intact, but the plasma membrane shrinks and the chloroplasts of the plant cell concentrate in the center of the cell.
24. XXXI (31, 1996) Packers 35, Patriots 21. Thirty years after winning the first Super Bowl, the Pack returned to win their third as Gulf Coast native Favre passed for two TDs and rushed for ...
This is a list of plants organized by their common names. However, the common names of plants often vary from region to region, which is why most plant encyclopedias refer to plants using their scientific names , in other words using binomials or "Latin" names.
List your income before taxes — including paychecks, wages, tax refunds, earned interest, dividends and any other type of income you receive. If you’re looking at a year, you can refer to your ...