1. Insulin: A hormone produced in the pancreas that helps regulate blood sugar levels.
2. Collagen: A structural protein found in connective tissues like skin, tendons, and bones, providing strength and flexibility.
3. Hemoglobin: A protein found in red blood cells that carries oxygen throughout the body.
Key Point: Ribosomes are the cellular machinery responsible for protein synthesis. They translate the genetic code from messenger RNA (mRNA) into a specific sequence of amino acids, which then fold into functional proteins.