FADH2 (flavin adenine dinucleotide)

FADH₂ (flavin adenine dinucleotide) is a molecule that plays a key role in energy production within cells. It acts as an electron carrier, capturing high-energy electrons during metabolic processes like the breakdown of nutrients. When nutrients are metabolized, FADH₂ is formed and then donates these electrons to the electron transport chain in the mitochondria, the cell's energy powerhouses. This transfer helps generate a form of chemical energy called ATP, which fuels various cellular functions. Essentially, FADH₂ helps convert the energy stored in food into usable power for the body.