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Unformatted text preview: reaction without being changed into a different molecule in the process. * Promote and regulate all the chemical reactions in the body A Proteins Specific Shape Determines its Function * a protein consist of one or more protein chains folded into a unique shape * a proteins specificity is dependent on its shape * most proteins are globular, although structural proteins are long and thin (fibrous) Denaturation * the process that alters the three dimensional structure * heat * salt * pH Temperature and Enzyme Activity Enzymes * Catalyst- Substances that speed up chemical reactions by increasing the frequency of collisions and properly orienting the molecules, without themselves being altered. * Characteristics * Specificity * each enzyme has a special substrate * active site * Efficiency-the number of reactions that can occur per minute (turnover number) * Control- the rate of synthesis can be altered by cellular mechanisms....
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