Circle the letter of the word that best completes the sentence. 1) There are a ______ pennies in a dollar. 2) He put the flash cards in ______. and so on. 4) April is the ______ month of the year. 5) Teachers often ______ students in pairs.
Pepsin, the powerful enzyme in gastric juice that digests proteins such as those in meat, eggs, seeds, or dairy products. 1  Pepsin was first recognized in 1836 by the German physiologist Theodor Schwann. 2  Glands in the mucous-membrane lining of the stomach make and store an inactive protein called pepsinogen.
Protein digestion and pepsin. There are different isoenzymes of pepsinogen, such as type I, synthesized by the cells of the body and fundus of the stomach, and type II that is produced in all the regions of the organ. All the isoenzymes are converted to the active enzyme.