In humans, urea is mainly formed from the metabolism of which one of t

In humans, urea is mainly formed from the metabolism of which one of the following components of food ?

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Fatty acids

Vitamins

Amino acids

Glucose

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UPSC CAPF – 2023

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Urea is the main nitrogenous waste product excreted by mammals. It is formed in the liver through the urea cycle, which processes excess amino groups from the breakdown of amino acids. Amino acids are the building blocks of proteins, and their metabolism yields nitrogen that must be eliminated from the body, primarily as urea.

Amino acids, derived from protein digestion, contain nitrogen. The liver converts this excess nitrogen into urea for excretion.

Fatty acids are primarily metabolized for energy storage and production. Vitamins are organic compounds required in small amounts for various metabolic processes. Glucose is the primary source of energy through cellular respiration. While the metabolism of fats, carbohydrates, and proteins are interconnected, urea formation specifically relates to the detoxification of nitrogen from amino acid breakdown.

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