Diffusion Flashcards
1
Q
What is diffusion?
A
Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
2
Q
Why does diffusion happen in solutions and gases?
A
Because the particles in these substances are free to move about randomly.
3
Q
The ______ the difference in concentration, the ______ the diffusion rate.
A
BIGGER + FASTER
4
Q
Only very small molecules can diffuse through cell membranes, like… (give 4 examples)
A
Oxygen, Glucose, Amino acids and Water.
5
Q
What are two big molecules that cannot fit through the cell membrane?
A
Starch and Protein.
