Here's why:

* Enzymes are biological catalysts: They speed up chemical reactions within cells without being consumed in the process.

* They control metabolism: All the chemical reactions that occur in a living organism are collectively called metabolism. Enzymes are essential for regulating these reactions.

* Specificity: Each enzyme is highly specific to a particular reaction or type of molecule. They act like tiny molecular machines, precisely manipulating molecules to create new products.

While other proteins have important roles, enzymes are the primary players in controlling the chemistry of life.