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Unformatted text preview: denature . The rate of chemical reactions therefore increases with temperature but then decreases. pH Each enzyme has an optimal pH . A change in pH can alter the ionization of the R groups of the amino acids. When the charges on the amino acids change, hydrogen bonding within the protein molecule change and the molecule changes shape. The new shape may not be effective. The diagram below shows that pepsin functions best in an acid environment. This makes sense because pepsin is an enzyme that is normally found in the stomach where the pH is low due to the presence of hydrochloric acid. Trypsin is found in the duodenum , and therefore, its optimum pH is in the neutral range to match the pH of the duodenum....
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This note was uploaded on 11/10/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.
- Fall '10