Answer
The urea cycle, also known as the Krebs-Henseleit cycle, is another significant discovery made by Hans Krebs. This cycle plays a crucial role in the metabolism of nitrogenous waste products, particularly ammonia. It converts ammonia into urea, which is a less toxic form that can be excreted by the kidneys. The urea cycle is essential for maintaining nitrogen balance in the body and preventing the accumulation of toxic ammonia.