Question

Temperature is increased from $3^o$ to ${40}^{o}C$. The rate of enzyme controlled biochemical reaction will

• A. Not change
• B. Increase
• C. Increase initially and then decrease
• D. Decrease

Answer 1

The correct option is C Increase initially and then decrease

Enzymes are made up of proteins which accelerates the rate of the reaction. It lowers the activation energy and converts the reactants into the substrate. The increased temperature increases the kinetic energy of the enzymes which further accelerates the activity of the enzyme but at the higher temperature, it gets denatured as the peptide bonds between the proteins molecules breaks which disrupts the structure of enzymes. So, the enzymatic activity decreases.

So, the correct answer is option C.