For example, the proteins that are dissolved in the cell ... long stretches of similar amino acid sequences within their primary structure. These stretches have been conserved through evolution ...

Most of the proteins in your body can be grouped into four categories based on the function they carry out. Category Function Examples Structural Forms supporting frameworks inside cells and forms ...

However, in the half-century since the structure of DNA was first elaborated, scientists have learned that RNA does much more than simply play a role in protein synthesis. For example, many types ...