Multiple choice

Isoenzymes are

  1. enzymes which have similar structure but different function

  2. enzymes which have same structure

  3. enzymes having same function but having different amino acid sequence

  4. none of these
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C Correct answer
Explanation

Isoenzymes (or isozymes) are different forms of an enzyme that catalyze the same reaction but have different amino acid sequences. These structural differences can arise from different genes or post-translational modifications, allowing the enzyme to function optimally in different tissues or under different conditions.

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