SIMPLE DIFFUSION

• WHAT IS SIMPLE DIFFUSION?

  net movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached (no ATP required)
• WHAT MUST MOLECULES HAVE FOR SIMPLE DIFFUSION?

  KE to enable them to move constantly in fluid
• WHAT MUST MOLECULES BE TO ALLOW FOR SIMPLE DIFFUSION?

  small and lipid-soluble