FADH 2 is produced during:

FADH2 is produced during the Krebs cycle (also known as the citric acid cycle or TCA cycle), which occurs in the mitochondria of cells. It is a carrier molecule that stores energy for later use during the electron transport chain, where it is converted back to its oxidized form, FAD.

FADH 2 is produced during:

FADH2 is produced during the Krebs cycle (also known as the citric acid cycle or TCA cycle), which occurs in the mitochondria of cells. It is a carrier molecule that stores energy for later use during the electron transport chain, where it is converted back to its oxidized form, FAD.