Describe the induced fit model of enzymatic action.

The induced fit model is a way of explaining how an enzyme can aid in a biological reaction. When the active site of an enzyme comes into contact with the substrate, the enzyme will attempt to mould itself around the substrate to form an enzyme-substrate complex. This puts stress on the bonds in the substrate, and so the activation energy for the reaction is lower than what it would be normally, and so the reaction has been catalysed. The reaction occurs, and then the substrate leaves the active site. The enzyme returns to its normal shape, too.