osmosis

Osmosis

The movement of water molecules across a selectively permeable membrane from a point of higher concentration to a point of lower concentration.

Selectively permeable membrane

Allow some materials to move freely across it while stopping others from passing through

Osmoregulation

The regulation of an optimum water and salt balance in the body

What factors affect the rate of osmosis?

Temperature, concentration gradient and surface area

Active transport

The movement of materials from an area Low concentration to an area high concentration using energy

Concentration gradient

Happens when concentration of a material is higher in one area than another. this makes the material move across the membrane to have balanced concentration