Chapter 25, Problem 25.31AP

Interpretation Introduction

Interpretation:

The reason for conversion of $N{H}_4{}^{+}$ ion into urea for excretion has to be explained.

Concept introduction:

• The $N{H}_4{}^{+}$ ion is highly toxic to living things, so the concentration of $N{H}_4{}^{+}$ ion should be diluted in the bodies living things.
• Urea is nontoxic to living things.
• Mammals converts $N{H}_4{}^{+}$ ion into urea during the excretion process.