Diffusion

Question 1

What is diffusion

Answer 1

• The net movement of particles from an area of high concentration to an area of low concentration

Question 2

In what type of substances can diffusion take pace

Answer 2

• Liquids and gases

Question 3

Diffusion through a partially permeable membrane

Answer 3

• A cell mambrane holds a cell toggether but also allows a few substance to enter and exit the cell
• These are usually veru small and dissolved in water (e.g: oxygen)

Question 4

How does concentration gradient affect ROD

Answer 4

• Higher / larger conc grad = higher ROD

Question 5

How does temperature affect ROD

Answer 5

• Higher temp = particles have more energy
• More energy = diffusion happens faster
• Faster diffusion = higher ROD

Question 6

How does surface area affect ROD

Answer 6

• Higher surface area = more particles can diffuse through a membrane at any given time
• More particles = higher ROD