Diffusion and osmosis

Question 1

A selectively permeable membrane

Answer 1

A selectively permeable membrane allows some but not all molecules to pass through

Question 2

Diffusion

Answer 2

Diffusion is the spreading out of molecules from a region of high concentration to a region of low concentration

Question 3

Osmosis

Answer 3

Osmosis is the movement of water molecules across a semi-permeable membrane from a region of high water concentration to a region of low water concentration

Question 4

Turgor, or turgor pressure

Answer 4

Turgor, or turgor pressure, is the outward pressure of the cytoplasm and vacuole against the cell wall of a plant