Diffusion Flashcards
1
Q
Where can diffusion happen
A
Diffusion happens in both solutions and gases because the particles in the substances are free to move about randomly
2
Q
What impact does concentration have on diffusion
A
The bigger the difference in concentration, the faster the diffusion rate
3
Q
Cell membranes and diffusion
A
Cell membranes hold the cell together but they let stuff in and out as well. Dissolved substances can move in and out of cells by diffusion. Only very small molecules can diffuse through cell membranes though eg. Oxygen, glucose, amino acids and water. Big molecules eg. Starch and proteins, can’t fit through the membrane
4
Q
What is diffusion?
A
Diffusion is the spreading out of particles from an area of high concentration to an area of low concentration
