isosmotic pressure
Quick Summary
Isosmotic pressure refers to a state where two solutions separated by a semipermeable membrane have equal solute concentrations and, consequently, equal osmotic pressures. Osmotic pressure itself is the force required to prevent the movement of a solvent across a semipermeable membrane from a less concentrated solution to a more concentrated one. This pressure is influenced by the concentration of solutes and the temperature.12
In biological contexts, isosmotic conditions mean that the solute concentration inside and outside a cell is the same, preventing net water movement across the cell membrane. This is crucial for maintaining cell size and function. The concept is fundamental to understanding fluid exchange in capillaries and water transport in plants.1
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