MHT CET Medical202621 April 2026Morning ShiftBiologyBiomolecules (B)Actual
Identify the INCORRECT statement with respect to enzymatic activity.
Options
- AIncrease in the substrate concentration increases the velocity of enzyme activity.
- BKm value is a constant and a characteristic feature of a given enzyme.
- CThe activity of enzymes is increased at low temperature.
- DThe rate of reaction is increased with the increasing concentration of the enzyme.
Correct answer
C. The activity of enzymes is increased at low temperature.
Step-by-step solution
Enzymes generally function in a narrow range of temperature and pH. Each enzyme shows its highest activity at a particular temperature called the optimum temperature. Activity declines both below and above the optimum value. Low temperature preserves the enzyme in a temporarily inactive state, whereas high temperature destroys enzymatic activity because proteins are denatured by heat. Therefore, the activity of enzymes is not increased at low temperatures. Increase in substrate concentration increases the velocity