Transportation in cells

• Diffusion is passive movement of particles from a area of high concentration to a area of low concentration
• Passive means does not require energy
• Oxygen and glucose diffuse into cells
• factors that can affect the rate of diffusion are

  • increase in the concentration gradient
  • Increase speed of diffusion
• the distance particles have to travel increases the speed of diffusion
• the temperature increases the speed of diffusion
• surface area of membrane increases the speed of diffusion
• Osmosis is the passive process of water molecules from a high water concentration to a low concentration through a semi permeable membrane
• Independent variable is the one that changes
• dependent variable is the variable that is
• Controlled variable doesn’t change
• Active transport is the movement of politicals from a low to high concentration against the concentration get radiant using energy