diffusion

Cellular Transportation Josey Nelson Introduction Helps in maintaining homeostasis Two types: Passive Transportation No energy required Two main types High to low concentration Active Transportation Uses ATP for transportation Low to high concentration Diffusion The movement of particles from high concentration to low concentration Purpose: to reach equilibrium Osmosis is diffusion of water 3 major types Diffusion of ions Diffusion of molecules Osmosis (diffusion of water) Facilitated Diffusion Uses proteins to transport ions and molecules High to low concentration Requires Carrier Proteins No ATP (energy) Types of Solutions Hypotonic: a solution that contains higher water concentrations in solution