Cell Membrane

Front 1

Active Transport

Back 1

the movement of ions or molecules across a cellular membrane from a lower to a higher concentration, requiring the consumption of energy.

Front 2

diffusion

Back 2

act of diffusing

Front 3

endocytosis

Back 3

the transport of solid matter or liquid into a cell by means of a coated vacuole or vesicle

Front 4

exocytosis

Back 4

the transport of material out of a cell by means of a sac or vesicle that first engulfs the material and then is extruded through an opening in the cell membrane

Front 5

facilitated diffusion

Back 5

a process by which substances are transported across cell membranes by means of protein carrier molecules

Front 6

osmosis

Back 6

the diffusion of fluids through membranes or porous partitions.

Front 7

passive transport

Back 7

is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input

Front 8

sodium-potassium pump

Back 8

The process of moving sodium and potassium ions across the cell membrance is an active transport process involving the hydrolysis of ATP to provide the necessary energy

Front 9

transport protein

Back 9

is a protein that serves the function of moving other materials within an organism

Front 10

vesicle transport

Back 10

is thus a major cellular activity

Front 11

Hypertonic Solution

Back 11

High amount of solutes outside the membrane water will be pulled from the cell dehydrating it. Ex: Sea water

Front 12

Hypotonic Solution

Back 12

Low amounts of solutes outside the cell. water rushes into the cell causing it to swell. If unchecked the cell will burst. Ex: Freshwater

Front 13

Isotonic Solution

Back 13

The solution inside the cell is the same as the solution outside the cell. The amount of solutes are equal. Ex: Saline Solution

Front 14

Concentration gradient

Back 14

the gradual difference in concentration of a dissolved substance in a solution between a region of high density and one of lower density.

Front 15

Equilibrium

Back 15

a state of rest or balance due to the equal action of opposing forces