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Catalysts & Enzymes


Catalysts are substances that speed up the rate of reactions, and yet are not altered by the reaction
(i.e. they are not affected). They are very useful because only a small amount of catalyst is needed
for a reaction and it can be re-used again and…

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There are two kinds of enzymes; intra-cellular (found inside cells) and extra-cellular (found outside
cells, for example in the stomach). There are enzymes in every single chemical reaction in living
organisms and most of them are made of proteins.

Enzymes also have a unique shape which goes with the shape…


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