Athel Cornish-Bowden talks about the characteristics of metabolic regulation and metabolic control, and differentiates between the two of them. He also talks about the relationship between metabolic control analysis and systems biology. Athel Cornish-Bowden is a Directeur de Recherche (Émérite) at the Centre National de la Recherche Scientifique (CNRS) in Marseilles, France. Although he started his career in a department of organic chemistry, virtually all of his current research is carried out in the realm of biochemistry. His research is focused on enzymes, in particular on pepsin, mammalian hexokinase, and enzymes involved in electron transport in bacteria. He has also authored several books related to enzyme kinetics.