Diffusion Flashcards
1
Q
What is diffusion?
A
The spreading out of molecules from a region of high concentration to a region of low concentration
2
Q
Give two examples of diffusion in plants
A
Carbon dioxide diffusing into a leaf
Oxygen diffusing out of a leaf
3
Q
Give two examples of diffusion in humans
A
Oxygen diffusing from the blood into a cell
Carbon dioxide diffusing out of a cell
4
Q
Is diffusion passive or active?
A
It is passive
5
Q
Why is diffusion said to be passive?
A
The movement of molecules in diffusion does not need external energy
