Which of the following statements about enzymes is false?
Correct answer: D. An enzyme is completely converted to product during metabolism.
- A. The Keq of a reaction remains unchanged in the presence of an enzyme.
- B. Enzymes speed up the rate of reaction in DNA synthesis.
- C. Harsh, acidic conditions can completely denature an enzyme.
- D. An enzyme is completely converted to product during metabolism.
Explanation
Enzymes are not consumed or completely converted to products during metabolism. Enzymes are catalysts that facilitate and accelerate biochemical reactions without being consumed or altered in the process. They remain unchanged after the reaction and are available to catalyze additional rounds of the same reaction.
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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