THORAX ABDOMEN AND PELVIS

MEDICAL

RECTUM AND ANUS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Digestive enzyme that is found in the stomach and begins the digestion of proteins
A
Protease
B
Pepsin
C
Amylase
D
Bile
Explanation: 

Detailed explanation-1: -Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen.

Detailed explanation-2: -Enzymatic digestion of proteins begins in the stomach with the action of the enzyme pepsin. Proteins are large globular molecules, and their chemical breakdown requires time and mixing.

Detailed explanation-3: -In the stomach, pepsin is the main digestive enzyme attacking proteins. Several other pancreatic enzymes go to work when protein molecules reach the small intestine.

Detailed explanation-4: -Pepsin is the mature active form of the zymogen (inactive protein) pepsinogen. Pepsin was first recognized in 1836 by the German physiologist Theodor Schwann. In 1929 its crystallization and protein nature were reported by American biochemist John Howard Northrop of the Rockefeller Institute for Medical Research.

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