osmosis

• Osmosis

  A special case of diffusion, where water moves from a region of higher water concentration (lower solute concentration) to a region of lower water concentration (higher solute concentration) across a semi-permeable membrane
• Osmosis

  Water moves from a region of higher water concentration to a region of lower water concentration across a semi-permeable membrane
• Osmosis is the passive movement of water molecules from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration)
• Experiment

  • Dependent variable is the mass change of the plant tissue cylinders
  • Independent variable is the concentration of the sugar solution
  • All other variables (volume, temperature, time, type of sugar) must be kept constant
• Osmosis is just the diffusion of water molecules
• Active transport is required to move nutrients into and out of cells, as it can move substances against their concentration gradient