Why do all enzymatic reactions need activation energy? Energy is needed for the enzyme to find its substrate. Energy allows only the substrate to bind. Energy is required by an enzyme so that it can be reused. Energy is required to disrupt a substrate's stable electron configuration.

Enzymes are biological catalysts that speed up chemical reactions in cells. They work by lowering the activation energy of a reaction, which is the energy required to start a reaction. However, enzymes still require some amount of activation energy to function.

The correct answer is: Energy is required to disrupt a substrate's stable electron configuration.

In an enzymatic reaction, the enzyme binds to the substrate and forms an enzyme-substrate complex. This binding disrupts the stable electron configuration of the substrate, making it more reactive and increasing the likelihood of a reaction occurring. The enzyme then facilitates the reaction by providing an optimal environment for the reaction to take place, such as by positioning the substrate molecules in a way that increases the likelihood of a reaction. After the reaction is complete, the enzyme releases the products and is free to bind to another substrate molecule and repeat the process.