Diffusion, Osmosis and Active Transport Flashcards
1
Q
What is diffusion ?
A
Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
2
Q
What is osmosis ?
A
Osmosis is the diffusion of water molecules across a semi-permeable membrane.
3
Q
What is active transport ?
A
Active transport is the movement of substances against their concentration gradient, requiring energy (ATP).
4
Q
What is a semi-permeable membrane ?
A
A barrier that allows certain molecules to pass while blocking others.
5
Q
What is water potential ?
A
The potential energy of water in a system, affecting the movement of water through osmosis.
