Question

Read the following statements with respect to the given diagram.
(i) A major amount of carbohydrates is digested in P.
(ii) Chief fat digesting enzyme is present in R.
(iii) Digestion of proteins and fats starts in T.
(iv) Enzymes trypsin and chymotrypsin are produced in S.
(v) Enzyme responsible for curdling of milk is present in P.
Which of the above statements are correct?

• A. (i), (ii) and (iv)
• B. (ii) and (v)
• C. (iii), (iv) and (v)
• D. (ii), (iv) and (v)

Answer 1

The correct option is B (ii) and (v)

The digestion of starch begins with the action of salivary alpha-amylase/ptyalin. The starch is further digested in the small intestine in the presence of pancreatic amylase. Pancreas secretes lipase enzyme and liver secretes bile salts. in the presence of bile and pancreatic lipase, fat is emulsified and digested in the small intestine. Protein digestion first starts in the stomach in the presence of pepsin enzyme. Trypsinogen and chymotrypsinogen are produced in the pancreas which are inactive(zymogenic) proteases that, once activated in the duodenum gets converted to active trypsin and chymotrypsin further digest the protein into simple amino acids. Chymosin, known also as rennin, is a proteolytic enzyme synthesized by chief cells in the stomach that curdle milk by transforming caseinogen into insoluble casein. Thus, the correct answer is option B.