2d

Question 1

Diffusion

Answer 1

The movement of particles in fluids (liquids and gases) from an area of high concentration to an area of low concentration, until equilibrium is reached

Question 2

Osmosis

Answer 2

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a partially permeable membrance

Question 3

Active transport

Answer 3

he movement of particles through a cell membrane from a region of lower concentration to a region of higher concentration using energy from respiration

Question 4

Factors that affect the rate of movement of substances into and out of cells

Answer 4

• Distance particles have to travel
• Concentration gradient
• Surface area