osmosis

water moves across the cell membrane by osmosis (a type of diffusion)

Osmosis is the movement of water from a dilute solution (high water concentration) to an area of lower water concentration through a partially permeable membrane

Apparatus and materials

• 0.0M sucrose solution (water)

• 0.2M sucrose solution

• 0.4M sucrose solution

• 0,6M sucrose solution

• 0.8M sucrose solution

• Large white potatoes (to cut potato cylinders to a length of 40mm)

• Knife

~

• Cork borer (recommended minimum diameter 14mm)

• 250 cm3 beakers (5)

• Measuring cylinder to measure 100cm° of sucrose solutions

• Ruler with mm scale

• Labels or marker

• White tile/board (for cutting potato)

• Paper towels

• Balances

• Calculator

• Safety glasses

Safety

Wear safety glasses.

Take care when with using the cork borer and the knife.

Q