movements

• diffusion is the movement of particles from a area of high concentration to a area of low concentration
• diffusion is a passive reaction as it requires no energy
• the rate of diffusion can be increased by higher concentration, larger surface area & higher temperture
• osmosis is the diffusion of water across a partially permerable membrane from a region of higher water concentration to a region of lower water concentration
• osmosis in plant cells have cell walls to absorb water
• osmosis in animall cells burst like a balloon because of no cell wall
• active transport is the movement of particles though a membrane via carrier proteins