Biology Unit 4 Vocab

Energy

is used during active transport but not passive transport

facilitated diffusion

a form of passive transport that uses transport proteins

endocytosis

process by which a cell takes in material by forming a vacuole around it

passive transport

particle movement from an area of higher concentration to an area of lower concentration

active transport

particle movement from an area for lower concentration to an area of higher concentration

exocytosis

process by which a cell expels wastes from a vacuole

protein pump

protein that must change shape in order to transport particles

channel protein

transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse

transport protein

used to help substances enter or exit the cell membrane

exocytosis 2

a vacuole membrane fuses ( becomes a part of) the cell membrane and the contents are released

active transport 2

when energy is required to move materials through a cell membrane

passive transport 2

the movement of substances through the cell membrane without the use of cellular energy

endocytosis 2

the cell membrane forms around another substance, for example, how the amoeba are released

equilibrium

when the molecules of one substance are spread evenly throughout another substance to become balanced

osmosis

the diffusion of water through a cell membrane

diffusion

when molecules move from areas of high concentration to areas of low concentration