Net movement of particles from a high concentration to a low concentration down a concentration gradient
1 of 7
What is osmosis?
Diffusion of water molecules from a high concentration to a low concentration across a partially permeable membrane.
2 of 7
What is facilitated diffusion?
Some larger molecules or charged atoms cannot pass directly through the phospholipid bilayer, instead they diffuse through protiens in the membrane.
3 of 7
What are carrier protiens?
these move large molecules in or out of the cell down their concentration gradient. by it attatching to the carrier protien, which then changes shape and releases it on the oppersit side.
4 of 7
What are protien channles ?
form pores in membrane for charged particles to diffuse through, down their concentration gradient.
5 of 7
How do carrier protiens work in Active transport?
exactly the same, just move molecules against their concentration gradient
6 of 7
What are co-transporters?
A type of carrier protien that binds two molecules at a time, using ones concentration gradient to move the other against it's own.
7 of 7
Other cards in this set
Card 2
Front
What is osmosis?
Back
Diffusion of water molecules from a high concentration to a low concentration across a partially permeable membrane.
Comments
No comments have yet been made