Before it was genetically engineered,what was the source of chymotrypsin used in cheese production?
A) calf stomachs
B) pig livers
C) human cadavers
D) sheep brains
E) cow intestines

Question

Quizplus · Accepted Answer

Before chymosin (which is produced through genetic engineering) became widely used in cheese production, the main source of chymotrypsin used was calf stomachs. The stomach lining of young calves contains chymosin, which can curdle milk and separate it into curds and whey. This traditional method is still used by some artisanal cheese producers.

Before It Was Genetically Engineered,what Was the Source of Chymotrypsin