GIVE DIFFERENCE BETWEEN OSMOSIS AND DIFFUSION ??
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Answer:
diffusion : soil water and Minerals moving to the root hair cell by the process of diffusion in day time, carbon dioxide diffuses from the atmospher into the leaf cells and oxygen diffuses out from the leaf cells into the atmosphere during photosynthesis. This moment of molecules -gas liquid or solid from higher concentration to lower concentration is called diffusion
osmosis: it is the movement of water molecules from its region of higher concentration to a semi permeable membrane to the region of its lower concentration
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Differences Between Osmosis and Diffusion
They are similar in many ways, too
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Gummy candy
An example of osmosis: water traveling from an area of high water density through the gelatin to an area of low water density, swelling the candy.
Martin Leigh / Getty Images
Table of Contents
by
Anne Marie Helmenstine, Ph.D.
Updated September 30, 2019
Students are often asked to explain the similarities and differences between osmosis and diffusion or to compare and contrast the two forms of transport. To answer the question, you need to know the definitions of osmosis and diffusion and really understand what they mean.
Definitions
Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. The solvent moves to dilute the concentrated solution and equalize the concentration on both sides of the membrane.
Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.
Examples
Examples of Osmosis: Examples include red blood cells swelling up when exposed to freshwater and plant root hairs taking up water. To see an easy demonstration of osmosis, soak gummy candies in water. The gel of the candies acts as a semipermeable membrane.
Examples of Diffusion: Examples of diffusion include the scent of perfume filling a whole room and the movement of small molecules across a cell membrane. One of the simplest demonstrations of diffusion is adding a drop of food coloring to water. Al
1. Diffusion can occur in any mixture, including one that includes a semipermeable membrane, while osmosis always occurs across a semipermeable membrane.
2. When people discuss osmosis in biology, it always refers to the movement of water. In chemistry, it's possible for other solvents to be involved. In biology, this is a difference between the two processes.
3. One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but in osmosis, only the solvent molecules (water molecules) cross the membrane. This can be confusing because while the solvent particles are moving from higher to lower solvent concentration across the membrane, they are moving from lower to higher solute concentration, or from a more dilute solution to a region of more concentrated solution. This occurs naturally because the system seeks balance or equilibrium. If the solute particles can't cross a barrier, the only way to equalize concentration on both sides of the membrane is for the solvent particles to move in. You can consider osmosis to be a special case of diffusion in which diffusion occurs across a semipermeable membrane and only the water or other solvent moves.