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Lesson 4

chapter 4

TermDefinition
How do materials move in and out of a cell Active and passive transport
different types of of membrane transport and how they work active transport uses energy and forces it against its concentration. passive transport moves the substances up the membrane
difference between facilitated diffusion and diffusion diffusion needs proteins and types of molecules. but facilitated diffusion is more simple.
selectively permeable it allows some molecules to pass through and not others
passive transport pushes the molecules up the membrane
diffusion the movement of molecules through high and low concentration
osmosis the movement of water through high and low concentration
active transport the movement of molecules up the cell through high and low forcing it against its concentration
Created by: user-1983995
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