🧬ap biology review

FADH2

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

FADH2 (Flavin Adenine Dinucleotide) is a high-energy molecule that stores energy for later use during cellular respiration, specifically in the electron transport chain.