NEET2005BotanyBiomolecules (B)Actual
The catalytic efficiency of two different enzymes can be compared by the:
Options
- Aformation of the product
- Bthe pH of optimum value
- Cthe K _ m value
- Dmolecular size of the enzyme.
Correct answer
C. the K _ m value
Step-by-step solution
The catalytic efficiency of two different enzymes can be compared by comparing their K _ m value or Michaelis Menten constant. The Michaelis constant is the substrate concentration at which the reaction rate is at half-maximum. The K _ m describes the affinity of enzyme for a substrate molecule. Greater the affinity lower is the K _ m value and sooner the V _ can be attained and vice versa. Related Theory K_m is the concentration of substrate which permits the enzyme to achieve half Vmax. An enzyme with a high K_m