AP BIOLOGY

Detailed explanation-1: -rennin, also called chymosin, protein-digesting enzyme that curdles milk by transforming caseinogen into insoluble casein; it is found only in the fourth stomach of cud-chewing animals, such as cows. Its action extends the period in which milk is retained in the stomach of the young animal.

Detailed explanation-2: -The coagulation of milk by the action of the enzyme rennin (E.C. 3.4. 4.3.) is an important biological phenomenon. It is the first step in the digestion of milk and if milk does not form a clot in the stomach, the proteolytic enzymes in the alimentary tract cannot function efficiently.

Detailed explanation-3: -Chymosin, the major component of rennet (milk clotting enzyme), is an acid protease produced in the fourth stomach of milk-fed ruminants including goat and sheep in the form of an inactive precursor prochymosin.

Detailed explanation-4: -Rennin is also known as chymosin. Rennin meaning is given as a protein-digesting enzyme that curdles milk by transforming the caseinogen into insoluble casein. It is found only in the cud-chewing animal’s fourth stomach, like cows. Its action extends the period where milk is retained in the young animal’s stomach.