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Question

Mark the wrong statement about enzymes
  1. enzymes are biological catalysts
  2. each enzyme can catalyse a number of similar reactions
  3. enzymes are very efficient catalysts
  4. enzymes are needed only in very small amounts for their action

A
enzymes are very efficient catalysts
B
each enzyme can catalyse a number of similar reactions
C
enzymes are biological catalysts
D
enzymes are needed only in very small amounts for their action
Solution
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Option (B) is incorrect. Enzymes are efficient and biological catalysts which are needed only in very small amounts for their action but each enzyme can catalyse only a specific selective reactions. This is often referred to as "the lock and key" model.

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