Transporting Substances Flashcards
1
Q
Define diffusion:
A
The movement of a substance (liquid or gas) but not water. From high to low concentration.
2
Q
Define osmosis:
A
This is the diffusion of water, across a semi-permeable membrane.
3
Q
Define active transport:
A
Movement of ions against the concentration gradient.
4
Q
What is equilibrium?
A
Equal spread of particles
