Which of the following factors does NOT affect the rate of an enzyme-catalyzed reaction?
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Enzyme activity is affected by factors like temperature, pH, and substrate concentration, but not by the color of the enzyme. Be sure to focus on factors that impact the enzyme's active site and molecular structure.
Enzyme activity is impacted by various factors; enzyme color is not one of them. The following factors influence enzyme activity:
Temperature (Option 1): Enzyme-catalyzed reaction rates generally rise with temperature until a maximum is reached. However, excessively high temperatures can denature enzymes, thereby decreasing their activity.
pH (Option 2): Enzymes exhibit optimal activity within a specific pH range. Deviations from this optimal range can alter enzyme structure and function, leading to reduced reaction rates.
Substrate concentration (Option 3): An increase in substrate concentration typically accelerates the reaction rate until enzyme saturation occurs, at which point the rate plateaus. This is due to more frequent collisions between substrate molecules and the enzyme.
Color of the enzyme (Option 4): An enzyme's color has no bearing on its activity. Enzyme function is dictated by their structure and operating conditions, not their color.