Look at the video on the right. Water and many minerals dissolved in solution must enter the body through diffusion and osmosis.
Diffusion is the movement of substance
Dialysis is when
Osmosis is when
The movement of water across a semipermeable membrane is called
A perfume bottle is opened in the far corner of the room, the perfume moves across the room so that a person standing on the other side can smell it. This is an example of
Diffusion of water molecules across a selective permeable membrane is known as osmosis. Consider the animation on the right. It shows a membrane permeable to water separating a solution of glucose from pure water.
Water moves from an area where there is low solute concentration to an area of high solute concentration, as shown by the arrow, until both concentrations are equal. The solution with a higher concentration of solute is known as hypertonic while a solution with a low concentration of solute is known as hypotonic. When both solutions reach the same concentration they are said to be isotonic.
The direction of movement of water molecules is determined only by the difference in total solute concentration and not by the nature of the solutes.
Consider the image on the right. It shows two solutions separated by a semi permeable membrane. Since the total concentration of solute particles is the same on both sides of the membrane, even though different solute particles exist, no net movement of water occurs.
Consider the image on the right. It shows two solutions separated by a semipermeable membrane.
Solution A is considered to be
Solution B is considered to be
Net movement of water
Consider the image on the right. It shows two solutions separated by a semipermeable membrane.
Solution A is considered to be
Solution B is considered to be
Net movement of water
