Question

Assertion: Conversion of protein to peptides in the duodenum cannot be achieved by the pancreatic juices alone.
Reason: Bile juices provide the alkaline environment for trypsin to act.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true but R is not a correct explanation of A.
• C. A is true but R is false.
• D. A and R are false.

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A.

Proteins are broken down into peptides by the action of the enzyme trypsin. Trypsin is released by the pancreas in an inactive form called trypsinogen. Trypsinogen is activated in an alkaline environment which is created by the addition of bile juices from the liver. The alkaline nature of bile not only helps in activation of trypsinogen but also helps in neutralisation of the acidic chyme which is released from the stomach. Thus the correct answer is option A.