Module 1 — Peptides: What They Are
Peptides are short chains of amino acids. They act as signaling molecules that tell cells how to behave — for example, to repair tissue, modulate inflammation, or influence hormone pathways. Some are used topically, others systemically, and many are currently studied in research settings.
Learning goals: know the definition, key uses (repair, signalling), and difference between peptides and full proteins.
Quick quiz — 5 questions
1. A peptide is:
2. Peptides commonly act as:
3. Compared to proteins, peptides are generally:
4. Peptides are made of:
5. Which is true about peptide applications?