BIOLOGY 0.0 / 5 ? BiologyEnzymes and digestionGCSEAQA Created by: eunice walkerCreated on: 04-05-14 00:08 What are Enzymes? Enzymes are biological catalysts 1 of 5 What is a catalyst? A catalyst is a substance which speeds up the rate of reaction without being changed or used up 2 of 5 What are proteins made up of? Long chains of amino acids 3 of 5 Proteins act as catalysts. What else do they act as? structural parts of tissues, hormones, antibodies 4 of 5 Give three statements about Enzymes Enzymes have specific shapes that fit onto the substance in the reaction, 5 of 5
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