Which change would best restore the rate of an enzyme controlled reaction in the presence of a competitive inhibitor?
Correct answer: A. Increasing the concentration of substrate
- A. Increasing the concentration of substrate
- B. Increasing the concentration of inhibitor
- C. Raising the temperature above the optimum
- D. Lowering the pH well below the optimum
Explanation
Because substrate and inhibitor compete for the same active site, flooding the mixture with substrate outcompetes the inhibitor and the normal maximum rate returns. This is the classic test that distinguishes competitive from non competitive inhibition.
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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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