Q28 / 465 · NTA Abhyas (NEET) 2020 · Chemistry · Biomolecules

The catalytic efficiency of two different enzymes can be compared by

  • Correct answer
    A
    its Km value.
  • B
    its pH optimum value.
  • C
    the molecular size of the enzyme.
  • D
    the formation of the product.

Solution

Km is the substrate concentration required to reach half the maximum velocity of the reaction. Lower value of Km indicates higher affinity between substrate and the enzyme, thus reaction is fast. The lower value of Km indicates lower affinity and the reaction is slow.

Hence, the correct answer is option: 'A'.

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