Movement

• What is osmosis?

  Movement of water across a membrane
• In which direction does water move during osmosis?

  From high concentration to low concentration
• What is the basis for osmosis?

  Osmolality
• What is diffusion?

  Movement of particles across a semi-permeable membrane
• In which direction do particles move during diffusion?

  From high concentration to low concentration
• What type of diffusion do electrolytes require?

  Active or facilitated diffusion
• What is the role of ion pumps in electrolyte movement?

  They facilitate active diffusion
• What is filtration in biological systems?

  Movement of fluid through a membrane due to pressure
• What causes fluid movement during filtration?

  Hydrostatic pressure differences
• What is hydrostatic pressure?

  Pressure of water molecules outwards from a confined space
• In which direction does water move due to hydrostatic pressure?

  From high pressure to low pressure