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Chapter 9 Cells

TermDefinition
Passive Transport When materials go in and out of the cell WITHOUT using energy.
2 types of passive transport: 1. Diffusion: The movement of molecules from an area of high concentration to an area of low concentration. 2. Osmosis: The movement of WATER molecules across a selectively permeable membrane.
Selectively permeable means some substances can cross the membrane while others cannot.
Active transport When materials go in and out of the cell using energy.
Moving Large Particles 1. Endocytosis: The cell changes shape and engulfs the particle. 2. Exocytosis: The reverse process, which allows large particles to exit the cell.
Created by: user-2006846
 

 



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