Answer
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Hint: Ornithine cycle is also known as the urea cycle. It is a series of biochemical reactions that produce urea from ammonia. Ammonia is the toxic product of nitrogen metabolism occurring in our body which should be removed. The catabolism of Amino acid results in waste ammonia. Every animal needs a way to excrete this product.
Complete answer:
Almost \[80\% \] of the nitrogen in found in mammals and humans are of the form of urea, which is produced through a series of biochemical reactions that occurs in the cytosol and mitochondrial matrix of the liver cells. These biochemical reactions are collectively called the Urea cycle. Urea cycle which is also known as the ornithine cycle, is a series of biochemical reactions in which urea is produced from ammonia. It usually occurs in ureotelic organisms.
Ornithine cycle or the urea cycle is related to excretion. Excess amino acids are converted into urea with the help of this cycle. There are about five major steps. The process of deamination takes place where extra proteins in the body are degraded and the \[N{H_2}\] group is removed and gets converted into ammonium ions in the liver. The ammonium ions which enter the urea cycle get converted into urea. Urea then formed in the liver is transported to the kidney through circulation and at last gets excreted.
Hence the answer to this question is Excretion.
Note:
The urea cycle was the first metabolic cycle to be discovered. It was discovered by Hans Krebs and Kurt Hensel, in the year \[1932\], five years prior to the discovery of the TCA cycle. This cycle was later on described in more detail by scientists Ratner and Cohen. The ornithine cycle/urea cycle primarily takes place in the liver and to a lesser extent they also take place in the kidneys.
Complete answer:
Almost \[80\% \] of the nitrogen in found in mammals and humans are of the form of urea, which is produced through a series of biochemical reactions that occurs in the cytosol and mitochondrial matrix of the liver cells. These biochemical reactions are collectively called the Urea cycle. Urea cycle which is also known as the ornithine cycle, is a series of biochemical reactions in which urea is produced from ammonia. It usually occurs in ureotelic organisms.
Ornithine cycle or the urea cycle is related to excretion. Excess amino acids are converted into urea with the help of this cycle. There are about five major steps. The process of deamination takes place where extra proteins in the body are degraded and the \[N{H_2}\] group is removed and gets converted into ammonium ions in the liver. The ammonium ions which enter the urea cycle get converted into urea. Urea then formed in the liver is transported to the kidney through circulation and at last gets excreted.
Hence the answer to this question is Excretion.
Note:
The urea cycle was the first metabolic cycle to be discovered. It was discovered by Hans Krebs and Kurt Hensel, in the year \[1932\], five years prior to the discovery of the TCA cycle. This cycle was later on described in more detail by scientists Ratner and Cohen. The ornithine cycle/urea cycle primarily takes place in the liver and to a lesser extent they also take place in the kidneys.
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