🧬ap biology review

Mitochondria

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

Mitochondria are organelles within eukaryotic cells that produce most of the cell’s supply of adenosine triphosphate (ATP), used as a source of chemical energy.