lab notes 6 Flashcards
osmosis
higher concentration of solute is separated from a lower concentration of solute by a membrane
osmosis is
the net movement of water
osmotic pressure is
the force of the water movement across the membrane
isotonic solution is
the particles outside the cell create the same pressure as inside the cell
hypertonic solution
the pressure outside the cell is greater than inside the cell
hypotonic solution
the pressure outside the cell is lower than inside the cell
diffusion is
random movement of molecules due to their internal kinetic energy
net diffusion of particles
difference in concentration between two regions of the system; movement occurs until equilibrium
Fick’s Law of Diffusion
Q = D x A (C1 -C2)
Q =
diffusion rate
C1 - C2 =
concentration gradient
A =
area (of membrane) across which molecules are diffusing
D =
diffusion coefficient
phagocytosis is a type of
endocytosis
a phagocytosis uses
its plasma to engulf a large particle
