Question

Nitrogenous wastes are formed from the breakdown of

• A. NH${}_3$
• B. Fat
• C. Amino acids
• D. Water

Answer 1

Answer: (C)

Amino acids

The main nitrogenous wastes are urea and uric acid. Urea is formed from metabolism of amino acids, while uric acid is formed from metabolism of nucleotides. As urea is the main nitrogenous waste of the body which is formed by the breakdown of amino acid.

So, the correct answer is option C.