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Introduction to Enzymes Enzymes are biological catalysts that speed up rate reactions inside living thing organisms. Enzymes break down big molecules into smaller molecules; starch protein and fats are big molecules that cannot pass through call walls into the blood system, so enzymes break them down into smaller molecules to allow them to pass through cell walls. Enzymes can also build up thing like muscle. The higher the concentration the quicker the reaction will work fro example if there was only one enzyme to break down a substance it would take longer than if there was a hundred. Enzymes are made from protean, that's why it is important to eat foods like meats and fish. You know if something is an enzyme because they usually end in 'ASE', for example Protease that breaks down protein into Amino Acids. Each type of enzymes is unique they can only break down one type of substance...

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