Glycolysis takes place in the cytoplasm. Within the mitochondrion, the citric acid cycle occurs in the mitochondrial matrix, and oxidative metabolism occurs at the internal folded mitochondrial ...

Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... complex is very sensitive to oxygen and is deactivated in its presence.

A Nobel Prize, of course. Such was the case for Hans Krebs, the biochemist who nabbed the award in 1953 for discovering the citric acid cycle, or “Krebs cycle”—the cellular pathway that converts ...