Question

Explain Mechanism of enzyme catalyst​

Answer 1

enzyme as catalyst.

enzymes have active sites specific for molecules (substrate). The substrate binds with the active site as in a "lock-key" fashion. The enzymes in turn weakens the bonds present in the substrate hence lowering the activation energy.

Now, product forms and then, the bond between enzyme and product breaks finally leaving the enzyme and product separately.

The amount of enzyme provided is same after the reaction without any change in the structure of enzyme. So, enzymes are also known as biocatalyst.

hope this helps you

Answer 2

The enzyme - catalysed reactions nay be considered to proceed in two steps

Step1:

Binding of enzymes to substrate to forms an activated complex

E+S ----> ES*

Step2:

Decomposition of the activated complex to form product

ES* -----> E+P