Question

How is urea produced in the body?

Answer 1

The removal of potentially dangerous or toxic chemicals from the body is known as excretion. Typically, these compounds are waste products of intricate chemical reactions that occur in living organisms. The processes are catalysed by enzymes. The term "excretion" usually refers to the process of removing nitrogenous (nitrogen-containing) substances from the body urea-like compounds.

Complete answer:
The liver is a multifaceted organ. It can carry out around 500 distinct tasks. Controlling amino acid concentration and detoxification are two of these. Urea is a metabolite (breakdown product) of amino acids that is formed in the liver. Ammonium ions are generated when amino acids are broken down. Some are employed in nitrogen compound production. Ammonium ions in excess are transformed to urea.
Proteins and amino acids, which are protein metabolites, cannot be stored in the body. When too much protein is consumed, the excess amino acids generated during digestion are transferred from the small intestine to the liver. A sequence of chemical events starts when amino acids are taken by liver cells. In the presence of an enzyme catalyst, the amino acid is oxidised. The amine group, -NH2, and a hydrogen atom,H are both removed from the amino acid's primary structure at the same moment. Ammonia is a significant byproduct of this process. The addition of a hydrogen atom reduces the amine group to ammonia. Deamination is the name for this procedure.
This series of reactions is called the ornithine cycle. The urea and water are released from the liver cells to the bloodstream and transported to the kidneys where the blood is filtered and the urea is
passed out of the body in the urine. Urea is very soluble and a small molecule, so it is relatively easily passed out by the kidneys as a solution in water.

Note:-
Urea is a key component of mammalian urine. As a result, it's understandable that some people wonder if the urea in cosmetics comes from urine. Urea is synthesised in a lab and used in commercial cosmetics. Synthetic urea is also often used to aid fermentation in baked goods and wines.