Diffusion Flashcards
1
Q
Diffusion
A
The net movement of particles from an area of high concentration to an area of low concentration
2
Q
Partially permeable membrane
A
A membrane where some and not all particles can diffuse through the membrane
3
Q
Factors affecting rate of diffusion
A
Surface area
Concentration difference
Membrane thickness
4
Q
Ficks law
A
Rate of diffusion is directly proportional to
Surface area x conc. difference ÷ membrane thickness
5
Q
What does increasing the surface area do
A
- Increases rate of diffusion
- Increases number of diffusion points
6
Q
What does increasing the concentration difference do
A
- Increases rate of diffusion
7
Q
What does increasing the membrane thickness do
A
Decreases diffusion rate
