diffusion and osmosis?

Question

what are the diffences between the two and what are the similarities between the two.

Answer 1

Differences: Osmosis requires a partially permeable membrane while diffusion does not.Osmosis only involves water molecules while diffusion involves all.

Similarities: Both are from Higher concentration to a lower concentration.Both doesn't require energy for the process to happen.

Answer 2

Osmosis is one type of diffusion (just as tennis shoes are one type of footwear).

They both involve net movement of molecules from an area of higher concentration to an area of lower concentration. This direction is called "down" the concentration gradient or "with" the concentration gradient. When diffusion moves molecules through a membrane, it is a form of passive transport, just as osmosis is passive transport. Both osmosis and diffusion continue until the system reaches dynamic equilibrium and both involve molecules or particles moving randomly.

Osmosis differs from diffusion in that it MUST be diffusion of WATER through a SELECTIVELY PERMEABLE MEMBRANE. Diffusion can be all kinds of molecules, and diffusion does not have to be through a membrane.

Answer 3

Diffusion is the movement of molecules or substances from a region of higher concentration to lower concentration, and may or may not occur through membranes. For example, when you open a bottle of perfume (higher concentration), the smell, through diffusion of perfume molecules, eventually reach you (where concentration is lower).

Osmosis is like diffusion through a membrane only that it's specifically used for water movement, and it occurs through special pores in membranes called aquaporins.

Both are dependent on the presence of a concentration gradient and the kinetic energy of molecules to happen. The second one is important because if you reduce energy by freezing, for example, no movement will happen no matter how large the concentration difference is.

Answer 4

Diffusion is the dispersion of a substance from a high concentration to low.

Osmosis involves molecules going from high concentration to low concentration in a liquid through a selectively permeable membrane. For example, water will flow through a membrane into a salt solution in order to dilute the salt.

Answer 5

diffusion is when material flows in both directions, and there is necessarily no membrane between the two media. for example, if you apply perfume at one corner of a room, you will be able to smell it from the other corner, because molecules of perfume will diffuse in the air to reach the other corner of room.
Osmosis is transport of material from a higher concentration to a lower concentration, essentially through a membrane. for example, if you pour salt on a tomato or cucumber, there will be visible water after sometime. this water comes from the cucumber or tomato, to make the concentration of salt same on both sides of the cell mebrane.
so in either case, there is transport of matter, but in osmosis, it is through a membrane and in case of diffusion no membrane is required.

Answer 6

DIffusion is the process where the small molecules and the ions pass through the semi-permeable membrane due to concentration gradient,which is similar to osmosis.
why?
both of them are concern about the difference of concentration between inner and outer part of membrane.
However they are different in terms of solute potential and water potential.

Answer 7

Diffusion is energy going out, and osmosis is like the combineing of cells or something.