The element found in amino acids that is also found in simple sugars like glucose and fructose is carbon (C).

Here's why:

* Amino acids are the building blocks of proteins. They contain a central carbon atom bonded to an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom (-H), and a side chain (R-group) that varies depending on the specific amino acid.

* Simple sugars like glucose and fructose are carbohydrates. They are composed of carbon, hydrogen, and oxygen (CHO).

Both amino acids and simple sugars have carbon as a fundamental component of their molecular structure.