Question

Which of the following glandular secretions involved in digestion would be more
likely released initially as inactive precursors?
Protein-digesting enzymes (main) B. Fat-solubilizing bile salis
C. Acid-sentralizing bicarbonate D. Carbohydrate-digesting enzyme

Answer 1

Explanation:

(a) protein digesting enzyme

Answer 2

As we know that  the proteolytic enzymes are strong enzymes and if it released in activated form it can damage the gland or its duct. Thus, they are commonly released as inactive precursors called as zymogens such as trypsinogen and pepsinogen.

Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.

Hence, we get correct option that is A. Protein-digesting enzymes.