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Alex Boultwood 11a Mr. Francis Enzyme Investigation. An enzyme is a protein molecule composed of polymers of amino acids that speeds up chemical reactions in all living things. Without enzymes, these reactions would occur too slowly or not at all, and no life would be possible. All living cells produce enzymes. Enzyme molecules function by altering other molecules. They dramatically increase the rate at which reactions occur within living organisms, without being 'used up' or effecting the reaction in any other way. Enzymes combine with the altered molecules to form a complex molecular structure in which chemical reactions take place. The enzyme, which remains unchanged, then separates from the product of the reaction. Therefore, enzymes are called biological catalysts. Enzymes save the need for an increase in temperature in order to speed up reactions within living things. Such an increase in temperature would be lethal to the organism. Hydrogen Peroxide is a waste product...

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