6.3 Transport Flashcards
passive diffusion
high concentration to low concentration
facilitated diffusion
protein assists molecules in passing over membrane
simple diffusion
molecules pass over membrane on their own
osmosis
water moves from a high concentration of water to a low concentration of water
low concentration of solute to high concentration of solute
hypertonic
higher in solute
hypotonic
lower in solute
isotonic
same solute concentration as water concentration
How does water move?
hypotonic –> hypertonic
Active transport
movement from low to high concentration
_____ Shape Change
Conformational
What does Conformational Shape Change do?
Creates a different shape around a molecule to push it out to the other side of the membrane
What powers this process?
ATP
What does endocytosis do?
Move large molecules into the cell
What does exocytosis do?
Move large molecules out of the cell
Do these require ATP?
yes