An enzyme secreted by the gastric mucosa of a newborn that assists in the digestion of milk proteins is
A)pepsin.
B)trypsin.
C)gastrin.
D)rennin.
E)cholecystokinin.

Question

Quizplus · Accepted Answer

Rennin is an enzyme secreted by the gastric mucosa of a newborn that assists in the digestion of milk proteins. Specifically, it helps to break down the protein in milk called casein, which is complex and difficult for infants to digest without rennin. As the infant gets older, their stomach produces less rennin as the need for it decreases. Pepsin, trypsin, gastrin, and cholecystokinin are all involved in digestion, but not specifically in the digestion of milk proteins in newborns.

An Enzyme Secreted by the Gastric Mucosa of a Newborn