$(a)$ Name the protein-digesting enzyme present in pancreatic juice and the hormone secreted by the pancreas.
$(b)$ What is the function of pancreatic juice?

(N/A) The protein-digesting enzyme present in pancreatic juice is $Trypsin$. The hormone secreted by the pancreas is $Insulin$.
$(b)$ Pancreatic juice contains enzymes like $Trypsin$ for protein digestion,$Lipase$ for fat digestion,and $Amylase$ for carbohydrate digestion. It also contains bicarbonate ions that neutralize the acidic chyme coming from the stomach,creating an alkaline environment necessary for the action of these enzymes.