ammonium ion, which is the end product of amino acid degradation, is toxic if allowed to accumulate. the urea cycle is a pathway that detoxifies the ammonium ions by converting it to urea - which is...
The urea cycle uses 2 ammonia and 1 carbon dioxide. Ornitine is converted to urea in this process. Ammonia is toxic and that is why the urea cycle exists - to consume them.
liver. Urea comes from the breakdown of proteins ultimately. But there are lots of conversions along the way between amino acids.Ammonia is one of the nitrogen donors to make urea