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Glossary

A list of often difficult or specialised words with their definitions.

Enzymes

Reusable protein molecules which act as biological catalysts, changing the rate of chemical reactions in the body without being affected themselves

Cells

The basic unit from which all living organisms are built up, consisting of a cell membrane surrounding cytoplasm and a nucleus.

Beating bacteria

Research and development to create new medicines involves testing large numbers of chemical compounds to look at their biological activity.

Decisions have to be made to pick which should be taken on to further development and production.

Beating bacteria It can be relatively quick and easy to obtain some key experimental results on large numbers of compounds using isolated enzymes or cells. However other tests that involve the use of animals and human patients must only be carried out on a selected small number of compounds.

How to use this site

There are a number of interactive features in this e-source:

  • A glossary of terms: any word with a glossary entry is highlighted like this.
  • Quick questions: at the end of most pages or sections there is a question or set of quick questions to test your understanding.
  • Animations: most of the animations can be expanded to full screen size, ideal for showing on an interactive whiteboard. The animations will play all the way through or can be viewed one section at a time.
  • Downloads: Teachers can download individual diagrams, animations and other content from the Download Library area of the website. Terms and Conditions apply.