Krebs Cycle
An enzyme mediated pathway that reduces the electron transporting coenzymes FAD+ and NAD+. The reduced forms of these molecules, NADH and FADH2 provide the electrons that power oxidative phosphorylation, the most efficient step in aerobic respiration.

Additionally, the Krebs cycle synthesizes ATP through substrate level phosphorlylation.

It was named for its discoverer, Hans Krebs.
The Krebs Cycle

Citrate > Isocitrate > AlphaKetoglutarate> Succinyl Coenzyme A > Succinate >Fumarate> Malate > Oxaloacetate > back to citrate