What is a Kreb cycle?

The Krebs cycle, also known as the citric acid cycle (CAC) or tricarboxylic acid (TCA) cycle, is a series of chemical reactions used by all aerobic organisms to generate energy. It oxidizes acetyl-CoA derived from carbohydrates, lipids, and proteins, producing NADH, FADH₂, and ATP (or GTP), and releasing CO₂ as a waste product.