Question

Define the terms: (a) semi permeable membrane (B) osmosis.

Answer 1

Hint: Semipermeable membrane is a thin membrane between two Solutions that permit Certain components of the solution, generally the solvent to pass through. Osmosis is the phenomenon of Moving solvent particles across a semipermeable From a region of low solute concentration to more solute concentration.

Complete answer:
a) Semipermeable membrane is a type of biological or synthetic membrane that will allow certain molecules or ions to pass through it by diffusion or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport. The rate of passage depends on the pressure, concentration and temperature of the molecules or salutes on either side, as well as the permeability of the membrane to each solute.
b) Osmosis is the process by which Solvent molecules pass from a solution of lower concentration to a solution of higher concentration through a semipermeable membrane. It is a passive process which takes place Without any expenditure of energy. The transport of solvent molecules continues from low to high concentration till the concentration on the other side of the region is equal.

Additional information: Depending on the membrane and solute, permeability may depend on solute size, solubility, properties or chemistry while osmosis is a vital process and biological system as biological membranes are semipermeable.

Note: Semi permeable membrane is not the same as selectively permeable membrane. Semipermeable membrane describes the membrane that allows Some particle to pass through whereas selectively permeable membrane chooses what passes through. In osmosis And biological systems, the solvent is generally water, but osmosis can occur in other liquids, supercritical liquids and even gases.