Question

Deamination is the first step in urea formation. It means the

• A. Reduction of ammonia
• B. Oxidation of ammonia
• C. Addition of amino group to a non-amino organic molecule
• D. Removal of amino group from an amino acid

Answer 1

The correct option is D Removal of amino group from an amino acid

Separation of amino and carboxylic groups from an amino acid is known as deamination. It takes place in liver. Glutamte is deaminated in the kidney. The amino group is removed from the amino acid and converted to ammonia by urea cycle. The carbon and hydrogen is recycled to form energy.

So, the correct answer is 'Removal of amino group from an amino acid'