top picks
A short video clip and key points which explain the role of enzymes in the body.

Three very detailed linked pages covering enzyme action, factors that affect rate and the lock and key hypothesis.

A detailed look at the enzymes of the digestive system, the reactions they catalyse and their products.

A detailed descrption of how blood sugar is controlled in humans. Linked pages include the symptoms of diabetes, and other examples of homeostasis.

A short but excellent video clip which introduces DNA, protein synthesis and the HGP.

An instructional section from the Diabetes UK webpage.

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 immune system
 blood cells
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