9.2 flashcards
1
Q
What is diffusion?
A
the movement of molecules from high to low concentration
2
Q
What is simple diffusion?
A
molecules move directly over the phospholipid bilayer
3
Q
What molecules can do simple diffusion?
A
small, uncharged molecules
4
Q
What is faciliatied diffusion?
A
molecules cross the membrane with the help of proteins
5
Q
What is osmosis?
A
diffusion of water across a semi-permeable mebraane to dilute higher resolute concentrations
5
Q
What molecules can do faciltated diffusion?
A
large, charged molecules
6
Q
What is hypertonic?
A
higher % solute lower % water
7
Q
What is hypotonic?
A
higher % water, lower % solute
8
Q
What is isotonic?
A
equal % solute and water
9
Q
A
