Question

The following graphs with the solid and dotted lines correspond to the reactions without and with enzyme, respectively. Which of the following graph(s) correctly represent the concept of activation energy ?

(A) (i) only 

(B) (iii) and (iv) 

(C) (ii) only 

(D) (i) and (ii) 

Answer 1

Correct option (D) (i) and (ii)  

Explanation: 

The activation enerfy of a chemical reaction is closely related to its rate. Specifically, the higher the activation energy, the slower the chemical reaction will be. This is because molecules can only complete the reaction once they have reached the top of the activation energy barrier. Each and every enzyme has active side at which substrate can bind, forming enzymes substrate complex to form product.