The GATE Grind

GATE 2026 BT – Question 21

General Biology · Biochemistry: Enzymes, classification, catalytic and regulatory strategies, Michaelis-Menten kinetics and inhibition · 1 mark · Multiple choice

The catalytic efficiency of an enzyme following Michaelis-Menten kinetics is defined by

  1. $k_{Cat}$
  2. $V_{max}/k_{Cat}$
  3. $k_{Cat}/K_M$
  4. $k_{Cat}/V_{max}$

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Correct answer: (C) $k_{Cat}/K_M$

Explanation

The catalytic efficiency (specificity constant) is $\frac{k_{cat}}{K_M}$.