ICSE BoardEnglish MediumSTD 10BiologyThe Excretory System2 Marks
Question
How is urea produced?
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Answer
Amino acids are broken down in the liver to form the amino group $(NH_2)$ compounds and keto acids like pyruvic acid and other acids.
Urea is formed from the amino group and other ammonium compounds during deamination by combination with $CO_2$. It takes place by the ornithine cycle.
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