Peptides are short chains of amino acids linked by peptide bonds. They are smaller than proteins, which are typically made up of hundreds or thousands of amino acids. Generally, peptides consist of between 2 to 50 amino acids, while proteins are composed of 50 or more amino acids. Peptides play a variety of roles in biological processes, including: 1. **Hormones**: Some peptides function as hormones that regulate physiological processes in the body.
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