Question

A good source of lipase is
A. Saliva
B. Pancreatic juice
C. Bile
D. Gastric juice

Answer 1

It is a liquid secreted by the gland that secretes insulin. It contains a variety of enzymes such as trypsinogen, chymotrypsinogen, carboxypeptidase, elastase, nucleases, lipase, and amylase. These enzymes help in breaking down complex food molecules.

Complete answer: The pancreatic juice is secreted into the small intestine through the hepato-pancreatic duct. It aids in the digestion of large complex molecules. It is a transparent fluid that is mainly composed of water. It contains essential organic and inorganic substances. The organic compounds of pancreatic juice are enzymes. The main enzymes are pancreatic amylase, pancreatic lipase, and pancreatic proteases. Pancreatic lipase helps in the breakdown of triglycerides into fatty acids and monoglycerides. Pancreatic amylase helps in the breakdown of carbohydrates into sugars. Pancreatic proteases include chymotrypsin, trypsin, elastase, and carboxypeptidase that breaks down the proteins into tripeptides and dipeptides. Pancreatic juice also includes nucleases that break down nucleic acids into nucleotides. The inorganic substances include cations such as $N{a^+},\;{K^+},\;C{a^{2+}},\;M{g^{2+}},\;Z{n^{2+}}$ and anions such as $C{l^-}.$ They help in neutralizing gastric juice during enzymatic digestion. Secretin and cholecystokinin regulate the secretion of pancreatic juice.
Hence, the correct answer is option B.

Note: Pancreatic juice is secreted by a glandular structure known as the pancreas. It has both endocrine and digestive function. It also produces hormones such as insulin and glucagon that help in regulating blood sugar levels. The pancreatic juice aids in the process of digestion of complex and large molecules.