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Unformatted text preview: concentrations of enzyme increase reaction rate. The supply of substrate will also limit the rate of enzyme-catalyzed reactions. 3. When proteins are denatured, their secondary and tertiary structures are destroyed because hydrogen bonds and disulfide bonds holding parts of protein chains together are broken. Heat and changes in pH can denature enzymes. 4. If 50 molecules of enzyme are present but only 25 molecules of substrate are present, then they enzyme cannot act at is maximum rate. If all molecules of enzyme could be engaged with substrate, much more product would be produced per unit time. Thus, the enzymatic reaction is limited in its rate by the lack of substrate (substrate-limited)....
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- Spring '09