Chapter 25, Problem 25.33AP

Interpretation Introduction

Interpretation:

The two amino acids that cause the arising of nitrogen in urea have to be stated.

Concept introduction:

• The formation of Urea from $N{H}_4{}^{+}$ ion is called urea cycle.
• Urea cycle is four step reaction processes.
• The four steps includes in the urea cycle are,

I-step: The starting compound carbamoyl phosphate leads to the formation of citrulline.

II-step: citrulline leads to argininosuccinate by reacting with aspartate amino acid.

III-step: The conversion of argininosuccinate into arginine.

IV-step: The conversion of arginine into urea.