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Lesson 4

Vocabulary Words

QuestionAnswer
Selectively Permeable A property of cell membranes that allows some substances to pass across it, while others cannot.
Passive Transport The movement of dissolved materials across a cell membrane without using cellular energy.
Diffusion The process by which molecules move from an area of lower concentration.
Osomosis The diffusion of water molecules across a selectively permeable membrane.
Active Transport The movement of materials across a cell membrane using cellular energy.
Endocytosis The process by which the cell membrane takes particles into the cell by changing shape and engulfing the particles.
Exocytosis The process by which the vacuole surrounding surrounding particles fuses with the cell membrane, forcing the contents out of the cell.
Created by: mjarvis042
 

 



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