NEET Zoology Digestion and Absorption Questions Solved

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?

(a) Duodenum : Triglycerides trypsin monoglycerides

(b) Small intestine : Starch a-amylase disaccharide (maltose)

(c) Small intestine : Proteins pepsin amino acids

(d) Stomach : Fats, Lipase micelles

Audio Explanation:

(b) In small intestine food meats with the pancreatic juice containing a-amylase, which converts starch into maltose, isomaltose and a-dextrins in small intestine. 

Starch Pancreatic α-amylaseMaltose (disaccharide)

The pancreatic juice also contains proenzymes trypsinogen, chymotrypsinogen an procarboxypeptidase. The trypsinogen is converted to active trypsin in intestine by enterokinase of intestinal juice. The trypsin converts proteins into large peptides and the large peptides are converted to dipeptide and amino acids by carboxypeptidase.

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