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Front 1

difusion

Back 1

the movement of a substance from a area of high cocentration to low concentration caused by the random motion of particles in a substance

Front 2

active transport

Back 2

requries the cell to move energy because the substance is being moved against the concentration gradient

Front 3

passive trasport

Back 3

movment across the cell membrane no enerygy

Front 4

osmosis

Back 4

the diffusion of water through a slectivly permeable membrane

Front 5

what makes the cell membrane selectivly permeable

Back 5

proteins

Front 6

phospolipids

Back 6

a lipid made of a phosphate group and two fatty acids- head polar and is atracted to water forming a weak bond

Front 7

homeostastis

Back 7

mantains this by alowing some substances to move across the cell membrane

Front 8

faclitated diffusion

Back 8

a protien used to transport spesific substances like amino acids and sugars called carrier protien do not use the cells energy

Front 9

3 osmosis

Back 9

hpertonic, hypotonic, isotonic

Front 10

hypotonic

Back 10

the fluid outside the cell has a lower concertration of dissolved particles which means the cell has less water in it

Front 11

hypertonic

Back 11

the fluid outside the cell has a higher concentration of dissolved particles then inside the cell

Front 12

endocytosis

Back 12

the movement of a substance into a cell by a vesticle is called

Front 13

sodium potasium pump

Back 13

sodium atracts water so it pumps sodium out and potasium in which atracts glucose

Front 14

receptor proteins

Back 14

1. changes in permeablity
2. second messangers
3. enzyme action

Front 15

excosytosis

Back 15

the movement of a substace by a vesicle to the outside of a cell