What are peptides formed from?

• A. Fatty acids
• B. Nucleotides
• C. Amino acids
• D. Sugars

Answer: (C)

Peptides are formed from amino acids, which are the building blocks of proteins. In the process of protein synthesis, amino acids are linked together through peptide bonds to create polypeptides, which can further fold and assemble into functional proteins. Each peptide consists of a specific sequence of amino acids that determines its structure and function within biological systems. This is foundational in understanding how proteins are structured and how they operate within various physiological pathways in the body. The presence of amino acids and their unique side chains also allows for a vast diversity of peptides, each playing different roles in biological functions, such as signaling, catalysis, and structural support.