Question

Which of these is the third step of an enzymatic reaction?

(a) Binding of the substrate to the enzyme

(b) Change in the conformation of the enzyme

(c) Production of an enzyme-substrate complex

(d) Release of product from the enzyme

I had been asked this question in an online interview.

This intriguing question originated from Biomolecules topic in section Biomolecules of Biology – Class 11

Answer 1

Correct answer is (c) Production of an enzyme-substrate complex

To explain: In an enzymatic reaction, a substrate first binds to the active site of an enzyme. This induces a conformational change in the enzyme to form an enzyme-substrate complex. This is converted into a product which is then released.