Difference Between Diffusion And Osmosis. In this article, you will come to know about what is diffusion, what is osmosis, what is the main difference between diffusion and osmosis, and a comparison between diffusion vs osmosis.
Both the terms diffusion and osmosis are kinds of passive transport. It plays an important role in moving molecules in and out of the cell. Osmosis and diffusion are very essential for biological processes because they transport water and nutrients between cells. Many students get confused about these concepts. First, we will understand the main difference between diffusion and osmosis and then differentiate between them in detail.
What Is The Main Difference Between Diffusion And Osmosis?
The main difference between diffusion and osmosis is that the:
-Diffusion is the movement of solute or solvent particles from high concentration to low concentration. In diffusion, no semi-permeable membrane is used, it can occur in any mixture.
-Osmosis is the movement of solvent particles from high concentration (dilute solution) to low concentration (concentrated solution) through a semi-permeable membrane.
What Is Diffusion?
Diffusion is the movement of solute or solvent particles from a high concentration to a low concentration until the equilibrium is reached. In diffusion, no semi-permeable membrane is used, it can occur in any mixture. In the human body, it occurs in the cells. It is done for the transport of small molecules across the cell membrane.
There are various types of diffusions like:
-Simple diffusion: Travel of substances without the help of proteins.
-Facilitated diffusion: Transportation of proteins across the cell membrane for the diffusion of substances.
-Osmosis: Diffusion of water through a semi-permeable membrane.
-Dialysis: Diffusion of solutes across a selectively permeable membrane.
Some examples of diffusion are:
1.Spraying the perfume in the room. The aroma of the perfume gets diffused into the air.
2.Dropping the food colour in the water. The whole water will diffuse with colour and diffusion will occur.
What Is Osmosis?
Osmosis is the movement of solvent particles from high concentration (dilute solution) to low concentration (concentrated solution) through a semi-permeable membrane. It occurs in cells to equalize the concentration.
For example, when cells are placed in water, red blood cells will absorb the water through their membrane. And, when placed in a concentrated sugar solution, the red blood cells will shrink. Because the water in the red blood cells comes out to the lower water concentration solution. This is why the cells are wrinkled when seen under the microscope. But inside our body kidney keeps the concentration of blood and concentration of the solution in red blood cells at an equal level.
Another example of osmosis is the roots of the plants absorbing water from the soil. Without osmosis, the plant would never be able to absorb the water.
Comparison Between Osmosis And Diffusion:
-Diffusion is the movement of solute or solvent particles from high to low concentration.
-Osmosis is the movement of solute particles from high to low concentration through a semi-permeable membrane.
-Diffusion takes place in any medium.
-Osmosis takes place in a liquid medium only.
-In diffusion, the particles flow in all directions.
-In osmosis, the particles flow only in one direction.
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