4-1 Voc. Science

Front 1

passive transport

Back 1

the movement of substances across a cell membrane without the use of energy by the cell

Front 2

concentration gradient

Back 2

a difference in concentration of a substance across a distance (difference between an area of higher concentration and an area of lower concentration)

Front 3

equilibrium

Back 3

condition in which the concentration of a substance(solute) is the same throughout a solution

Front 4

diffusion

Back 4

the movement of molecules (or particles) from regions of higher density (or concentration) te regions of lower density (or concentration)

Front 5

osmosis

Back 5

diffusion of water from a more dilute solution to a more concentrated solution through a selectively permeable membrane

Front 6

isotonic solution

Back 6

a solution whose solute concentration is equal to the solute concentration inside the cell

Front 7

hypertonic solution

Back 7

describes a solution whose solute concentration is higher than the solute concentration inside the cell

Front 8

hypotonic solution

Back 8

describes a solution whose sollute concentration is lower then the solute concentration inside a cell

Front 9

contractile vacuoles

Back 9

specialized structure that pump h20 out of (some) cells

Front 10

ion channel

Back 10

a pore in a cell membrane through which ions can pass

Front 11

facilitated diffusion

Back 11

the transport of substances through a cell membrane along a concentration gradient with the aid of carrier protein(channels)

Front 12

carrier proteins

Back 12

protein that transports substances across the cell membrane