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Cell Transport Vocabulary

AB
Passive Transportmovement of materials across the cell membrane from areas of high concentration to low concentration with no energy
Active TransportMovement across a cell membrane from areas of low concentration to high concentration with addition of energy
Diffusionmovement of small molecule, like oxygen, from high to low concentration
Osmosisdiffusion of water from high water concentration to low concentration
Lipid Bilayertwo layers of phospholipids that make up the cell membrane
Protein channelProteins used to transport larger molecules like glucose during facilitated diffusion
Membrane CarbohydratesUsed in cell to cell recognition
Selectively Permeable membraneAllows some materials in and out of cell but not others
Fluid Mosaic ModelThe cell membrane behaves like a liquid because phospholipids are in constant motion
ConcentrationMass of solute per volume of solution
Equilibriumsame concentration on both sides of a membrane
Isotonicsame amount of water on both sides of a membrane
Hypertonicless water outside the cell than inside the cell
HypotonicMore water outside the cell than inside the cell
CytolysisCell Bursting
PlasmolysisCell Shrinking
Turgor PressurePressure on the the inside of the cell wall by water filled central vacuole to help keep plants rigid
Facilitated DiffusionThe diffusion of larger molecules from high to low concentration through a protein channel
EndocytosisTaking materials into the cell by using folds in the cell membrane
ExocytosisForcing materials out of the cell by using folds in the cell membrane
Protein PumpsUse energy to force materials from areas of low concentration to high concentration
Vesiclesmall membrane package
PinocytosisCell drinking
PhagocytosisCell Eating


Science Teacher
Multi-Cultural Academy Charter School

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