Diffusion Flashcards
1
Q
Diffusion is…
A
the spreading out of particles from an area of high concentration to an area of low concentration
2
Q
What is affected by diffusion?
A
solutions and gases, particles in these are free to move about randomly
3
Q
Bigger difference in concentration =
A
faster rate of diffusion
4
Q
Cell membranes…
A
let dissolved substances in and out by diffusion
5
Q
Size of substances?
A
only very small molecules can diffuse through the cell membrane, like oxygen, amino acids, glucose and water and big molecules can’t fit (e.g. starch and proteins)
