🧬ap biology review

Protein

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Proteins are large biomolecules made up of long chains of amino acids that perform various functions in cells. They play critical roles in processes such as metabolism, cell signaling, and structural support.