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6 Cards in this Set

  • Front
  • Back

Diffusion

high to low concentration


small uncharged molecules


passive

Facilitated diffusion

high to low concentration


hydrophilic ions


through channel proteins


passive

Osmosis

free water molecules


high to low concentration


through phospholipid


passive

Active transport

low to high concentration


(against concentration gradient)


through carrier proteins


requires energy

Exocytosis

bulk transport out of a cell


vesicles fuse with surface membrane releasing their contents

Endocytosis

bulk transport of substances into cell


vesicles are created from cell surface membrane bringing contents into cell