biology voc test 2/15

is the net movement of particles from an area where there are many particles of the substance to an area where there are fewer particles of the substance

• diffusion

• dynamic equilibrium

• facilitated diffusion

is continuous movement but no overall change

• diffusion

• dynamic equilibrium

• facilitated diffusion

uses transport proteins to move other ions and small molecules across the plasma membrane

• diffusion

• dynamic equilibrium

• facilitated diffusion

diffusion of water across a selectively permeable membrane

• osmosis

• isotonic solution

• hypotonic solution

• hypertonic solution

a cell is a solution that has the same concentration of water and solutes- ions, sugars, proteins, and other substances

• osmosis

• isotonic solution

• hypotonic solution

• hypertonic solution

is in a solution that has lower concentration of solute

• osmosis

• isotonic solution

• hypotonic solution

• hypertonic solution

the concentration of the solution outside of the cell is higher than it is inside

• osmosis

• isotonic solution

• hypotonic solution

• hypertonic solution

this movement of substances across the plasma membrane against a concentration gradient requires energy

• active transport

• endocytosis

• exocytosis

is the process by which a cell surrounds a substance in a portion of the plasma membrane

• active transport

• endocytosis

• exocytosis

the secretion of a material at the plasma membrane

• active transport

• endocytosis

• exocytosis