Question

Which one of the following match correctly with the action of enzymes on the given substrate and the end product of the reaction?

• A. Oesophagus⟶ Fats, Lipase → Micelles
• B. Small intestine ⟶ Protein, Pepsin → Amino acid
• C. Small intestine ⟶ Starch, amylase → Disaccharides
• D. Duodenum ⟶ Triglycerides, Trypsin → Monoglycerides

Answer 1

The correct option is C Small intestine ⟶ Starch, amylase → Disaccharides

$\alpha$-amylase is found in pancreatic juices. Enzyme amylase converts starch into disaccharides, like maltose, isomaltose and dexrins in the small intestine.

Starch Amylase→ Maltose (disaccharides)

Option (a) is incorrect as fat digestion does not occur in oesophagus. The salivary maylase from saliva continues to act on the starch in the food.

Option (b) is incorrect as enzymes pepsin acts on proteins but in stomach not in small intestine.

Option (d) triglycerides are converted to diglycerides and fatty acids by lipase enzyme.