1. Pepsin
  2. Chymosin
  3. Trypsin
  4. Amylase
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1 Answers

Option 1 : Pepsin

The correct answer is Option 1 i.e. Pepsin.

Pepsin:

  • Pepsin is the digestive enzyme that breaks down proteins.
  • The Gastric Glands secrete the enzyme Pepsin.
  • Gastric glands are found in the stomach.
  • They secrete enzymes like Pepsin, Rennin which act upon the Proteins.
  • Glands in the mucous-membrane which line the stomach make and store an inactive protein known as pepsinogen.
  • When pepsinogen is released into the stomach and mixed with gastric juice, it is converted into pepsin.
  • Pepsin partially degrades proteins into smaller units called peptides.

​Renin:

  • It is also known as Chymosin.
  • The structure of Renin contains 340 amino acids. It helps in coagulating milk.
  • Large amounts of this enzyme are secreted in the stomach of infant mammals.
  • It is also present in the stomach of cud-chewing animals.

Amylase: 

  • Salivary amylase is an enzyme present in the human saliva which is produced by the salivary glands.
  • It helps in the process of digestion as it breaks down complex carbohydrates such as starch into simpler sugars like glucose and maltose.

Note: Trypsin is also secreted by the Salivary glands in our mouth.

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