Question

Rennin acts on milk proteins and converts

• A. Caseinogen into casein
• B. Casein into paracasein
• C. Caseinogen into paracasein
• D. Paracasein into carcinogen

Answer 1

The correct option is B Casein into paracasein

• Rennin is a proteolytic enzyme found in gastric juice of infants.
• This enzyme causes coagulation of milk and is important in the digestive processes of infants because it prevents the rapid passage of milk from the stomach.
• In the presence of calcium, rennin changes irreversibly the casein of milk to a paracasein which is then acted upon by pepsin. Hence, Rennin acts on milk proteins and converts Casein into paracasein.

So, the correct answer is 'Casein into paracasein'.