how Amino acids are processed into urea?

Answer 1

The Amino group (NH2) breaks off the amino acid molecule by a process called deamination and forms ammonia. Toxic ammonia is rapidly converted to urea by a process called the ornithine cycle.
Urea is only slightly toxic.

Answer 2

The process of converting amino acids into urea in the liver occurs in two stages: deamination and the ornithine cycle.

Deamination is the removal of ammonia from the amino acid. This is achieved by the addition of oxygen, so as the remnants of the amino acid after removing ammonia go to form a keto acid. The oxygen joins to the carbon where the amine group was by means of a double bond. This is generally a hydrolysis reaction (adding water), which is where the oxygen comes from. according to my past A-level biology notes, it could also be from just oxidation with pure oxygen, with a molecule of oxygen deaminating 2 amino acids. The keto acid is converted into other useful products like fats and carbohydrates,

The ammonia is used in the next stage of the ornithine cycle. In basic form, carbon dioxide gets added to ammonia to form urea. This however is a little more complicated in terms of how this comes to be. Ammonia (which is actually in the form of ammonium ions with the hydrolysis method as the amine group combines with the hydrogens from water, each with 2 hydrogen atoms), carbon dioxide (which comes mainly form hydrogen carbonate ions, HCO3-, which are the main transport form of CO2 in the blood) and ATP energy get thrown into a cycle which which is changing one amino acid into another. Example amino acids made are citrulline and arginine. Ammonia and CO2 are added when ornithine is being converted into citrulline, hence the name of the "ornithine cycle". In the end, when arginine is converted back to ornithine, a urea molecule is lost.

Urea can then be trasported to the kidneys for excretion.................tah dah!!!!!!!!

I hope this helped and can be understood. If there is something wrong, I am really sorry and that is why I am doing a physics degree and not a biology one. This is what I was taught or researched at A-level and I passed so there must be some truth in it.

Answer 3

I do not know if i Have readily understand your question but the chemical formula of urea is CO (NH2)2 and it is not an amino acid

Answer 4

The body need the 8 essential AMINO-acids on a regular basis(the only AMINO-acids that the body can't produce itself) and the only product that have all 8 of them is : cows MILK!!!

Answer 5

Well the respiratory system carries the ammonia and then the liver kinda turns the ammonia in to urea, sorry i don't know exactly how though.

Answer 6

The process is called De-amination.