What are proteins primarily made of?

Proteins are primarily made of amino acid molecules. Each protein consists of long chains of amino acids that are linked together by peptide bonds. There are 20 different amino acids that can be combined in various sequences to create a vast array of proteins, each with unique structures and functions in biological systems.

Amino acids serve as the building blocks of proteins, and their sequence determines the specific characteristics and functions of the resulting protein. The arrangement and interaction of these amino acids lead to the protein's three-dimensional shape, which is crucial for its biological activity.

Understanding that proteins are made from amino acids helps clarify their essential roles in the body, including structural support, enzyme activity, and immune response. This fundamental concept is foundational in biochemistry and molecular biology, making it vital for anyone studying the functions and processes involving proteins in living organisms.