Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
A phosphate group is a molecule in the chemical form PO4 that is part of many important biological structures such as DNA, RNA, ATP (adenosine triphosphate), and phospholipids.