Question

Digestion of proteins is incomplete in the absence of enterokinase because

• A. Pepsinogen is not converted into pepsin
• B. Chymotrypsinogen is not converted into chymotrypsin
• C. Trypsinogen is not converted into trypsin
• D. Prorennin is not converted into rennin

Answer 1

The correct option is C Trypsinogen is not converted into trypsin

• The pancreatic juice contains inactive enzymes - trypsinogen, chymotrypsinogen, procarboxypeptidases, amylases, lipases, and nucleases, which are responsible for then digestion of proteins, carbohydrates, fats, lipids, and nucleic acids respectively.
• Trypsin is the enzyme which helps in the conversion of proteins into dipeptides. Trypsinogen is it's inactive form. It is activated by enterokinase, which in turn activates other enzymes in pancreatic juice.
• Therefore, the absence of enterokinase would cause trypsinogen to remain in its inactivated form, thus, inhibiting digestion of proteins.
• Hence, Option C is the correct option.