Biology Unit3

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  • Created by: shannon
  • Created on: 25-04-13 19:02

We need to understand how biological and enviromental systems operate when they are working well in order to be able to intervene when things go wrong. Modern developments in biomedical and technological research allow us to do so.


The cells, tissues and organs in plants and animals are adapted to take up and get rid of disolved substances. Different conditions can affect the rate of transfer. Sometimes energy is needed for a transfer to take place.

Candidates should use skills, knowledge and understanding to:

* evaluate the development and use of artificial


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