2.4/2.5 Flashcards
1
Q
diffusion
A
movement of particles so that they spread out into available space, moving down concentration gradient
2
Q
concentration gradient
A
region along which density increases/decreases
3
Q
passive transport
A
diffusion of substance across biological membrane with no expenditure of energy
4
Q
osmosis
A
diffusion of water across selectively permeable membrane
5
Q
tonicity
A
ability of surrounding solution to cause cell to gain or lose water, depends on concentration of solutes that cant cross membrane
6
Q
isotonic
A
solution that when surrounding a cell, causes no net movement of water in or out of the cell
7
Q
hypertonic
A
solution when surrounding cell, causes it to lose water
8
Q
hypotonic
A
water enters faster than it leaves
