Question:

Which one of the following enzymes initials protein digestion?

  • Amino peptidase
  • Carboxy peptidase
  • Trypsin
  • Pepsin
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is D

Solution and Explanation

The gastric juice is secreted in considerable amount, with pH range of $1-3.5$. It contains $97-99 \%$ water, $0.2$ to $0.5 \% HCl$ and rest mucous, salt and enzymes. Pepsin is one of the major enzyme present in the gastric juice. Pepsin is secreted as pepsinogen (inactive form) converted into active form of $HCl$ endopeptidase in nature, ie, does not require any terminus for attack, works on interstitial sites. Converts protein molecules (especially of collagen) into proteoses, peptones and ultimately into large polypeptides.
Was this answer helpful?
0
0

Concepts Used:

Digestion and Absorption - Alimentary Canal

Digestion can be defined as the process of breakdown of large, insoluble and complex food molecules into smaller ones for its absorption and circulation in the body. This process involves the usage of a variety of digestive fluids and enzymes, including saliva, mucus, bile and hydrochloric acid, among others.

Read More: Digestion and Absorption

The alimentary canal is mainly referred to as the pathway by which food enters our body and moves out through the anus after digestion. It is a tube-like structure that starts from the mouth and ends in the anus. The alimentary canal plays a primary role in human digestion and is also termed as the digestive tract.

Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract.