movement of substances

Question 1

Diffusion

Answer 1

Diffusion is the net movement of particles from a region of higher solute concentration to a region of lower solute concentration down a concentration gradient.

Question 2

Osmosis

Answer 2

Osmosis is the net movement of water molecules from a solution of higher water potential to a solution of lower water potential through a partially
permeable membrane.

Question 3

Active transport

Answer 3

Active transport is the movement of particles from a region of lower solute concentration to a region of higher solute concentration against a concentration gradient and energy is required for this process.

Question 4

Plasmolysis

Answer 4

The shrinkage of cytoplasm and cell membrane away from the cell wall of a plant cell due to the loss of water when a living cell in immersed in a solution of lower water potential.