diffusion and osmosis difference 150 words at least
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Difference Between Diffusion And Osmosis

Osmosis
Osmosis is the diffusion of a solvent through a differentially permeablemembrane. In biological systems, the solvent will usually be water. Osmosis will occur whenever the water concentrations are different on either side of a differentially permeable membrane.
Osmosis can be defined as the movement of water molecules from higher water concentration area to the area of less water concentration through a semipermeable membrane. In other words, it can be defined as the diffusion of water molecules through a semipermeable membrane. It is a special case of diffusion of water (High to low). For example, water in the roots of plants is transported through osmosis.
Diffusion
Diffusion is the net movement of molecules of a substance from a region of their higher concentration to a region of their lower concentration. Net movement means there are more molecules moving in one direction than in the opposite direction.
Example: Opening a bottle of perfume in a room will result in the gradual diffusion of the perfume from the region of higher concentration (the bottle) out into the room. Diffusion will continue until the perfume has a more or less uniform concentration throughout the bottle and room.
The passive movement of matter; the spontaneous tendency of a substance to move down its concentration, pressure, or temperature gradient. Matter essentially moves (or diffuses) from an area of higher free energy to an area of lower free energy until equilibrium is achieved. In simple words, the movement of matter from high concentration area to low concentration area. For example, perfume diffuses into the air spreading the aroma.
Even though the process of diffusion and osmosis are almost similar, there are some notable differences between them. Few key differences are listed below.
Difference between diffusion and osmosis:
OsmosisDiffusionIt happens only in liquid state.It occurs in all states of matter i.e., solids, liquids or gases.It is the movement of only water or solvent from higher concentration area to lower concentration area.Any type of substance that moves from higher concentration area to lower concentration area.It is applied only for the solvent part of the solution.Diffusion is applied for all states of matter.
It requires semipermeable membrane.This phenomenon does not require semipermeable membrane.Osmosis depends on the rate of reduction of free energy of one solvent.It only depends on the free energy of the substance.Influenced by the solute potentialNot influenced by solute potentialIt is opposed by hydrostatic or turgor pressure.Hydrostatic pressure or turgor pressure will not occur in diffusion.In this process, concentration of solvent is not equalized.Concentration of whole substance will be equalised.Factors like solute potential, water potential and pressure potential will not affect osmosis.Factors like solute potential, water potential and pressure potential will not affect diffusion
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Diffusion: The movement of particles from higher concentration to its lower concentration is called diffusion.
---- diffusion in our body is through semipermeable membrane for example the exchange of carbon dioxide and oxygen is through diffusion.
-----It is a very fast process.
Osmosis: the movement of solvent molecules from its higher concentration to its lower concentration through a selectively permeable membrane is called osmosis.
---- Osmosis in our body takes place through a selectively permeable membrane only for example the movement of Ions and solvents outside the cell is in higher amount and inside the cell the ions and solvents is in lower amount so with help of osmosis the transfer of ions takes place.
---- it is a very slow process.
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