Rank from the first to the last steps to describe the correct order of events in an enzyme-substrate interaction.

Answer

          The correct order of events in an enzyme substrate interaction are mentioned below:

1. Substrate entering the active site of enzyme

         In this step substrate (molecule which is catalyzed by enzyme) bind to enzyme at its active part. The active site is composed of amino acids which help in attachment of substrate and fit them in best possible way.  

2. Enzyme substrate complex

       Once enzyme substrate complex is formed, activation energy for reaction start to decrease.  

3. Enzyme product complex

              In this phase products which are formed from substrate still attach to active site and bond breakage start between product and active site.

4. Product leaving active site of enzyme

                Now products are completely detached from active site, while enzyme is get ready to catch another substrate and start another catalytic reaction.