Cellular Respiration: Citric Acid Cycle

In the citric acid cycle the acetyl group from acetyl coenzyme A combines with oaxloacetate to form citrate During a series of enzyme controlled steps, citrate is gradually converted back into oxaloacetate which results in the generation of ATP and release of carbon dioxide

The citric acid cycle occurs in the matrix of the mitochondria

Dehydrogenase enzymes remove hydrogen ions and electrons and pass them to the coenzyme NAD forming NADH The hydrogen ions and electrons from NADH are passed to the electron transport chain on the inner mitochondrial membrane