The Rate of a Typical Enzyme-Catalyzed Reaction

question 18

Multiple Choice

The rate of a typical enzyme-catalyzed reaction:

• A)Is independent of pH over a broad range of pH values.
• B)Is approximately proportional to the substrate concentration as long as the substrate concentration is much lower than the Michaelis constant (Km).
• C)Rises by a factor of about 4 when the temperature is raised by 10° C.
• D)Is no longer affected by the enzyme concentration at saturating substrate concentrations.
• E)Is virtually independent of the temperature, as long as heat denaturation is avoided.

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