Final answer:
Amino acids play a primary role in protein synthesis and are essential for various biological functions. They are the building blocks of proteins and are obtained through the diet.
Step-by-step explanation:
Amino acids are the building blocks of proteins and are essential for protein synthesis. They play a primary role in the creation of new proteins, which are needed for various biological functions such as cell repair, muscle growth, and enzyme production. For example, when dietary proteins are broken down during digestion, the amino acids are released and used by cells to build new proteins. These proteins then carry out important tasks in the body. It is important to obtain amino acids through the diet, as some amino acids are not produced by the body and must be supplied from external sources.