Chapter 3 - Movement in and out of cells

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  • Created by: E456
  • Created on: 03-03-17 11:22
  • diffusion= the net movement of molecules and ions from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a result of their random movement. 
  • Water is one of the most important compounds in living organisms. It can make up around 80% of some organisms' bodies. It has many functions including acting as a solvent for many different substances. 
  • Visking tubing is called a partially permeable membrance because it will let some molecules through but not others. 

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