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प्रश्न
How does pepsinogen change into its active form?
उत्तर १
Pepsinogen is a precursor of pepsin stored in the stomach walls. It is converted into pepsin by hydrochloric acid. Pepsin is the activated in the form of pepsinogen.
Pepsinogen 
Pepsin + Inactive peptide
(Inactive) (Active)
उत्तर २
The proenzyme pepsinogen, on exposure to hydrochloric acid, secreted by oxyntic cells of gastric glands gets converted into the active enzyme pepsin, the proteolytic enzyme of the stomach.
APPEARS IN
संबंधित प्रश्न
Choose the correct answer among the following:
Gastric juice contains
(i) pepsin, lipase and rennin
(ii) trypsin lipase and rennin
(iii) trypsin, pepsin and lipase
(iv) trypsin, pepsin and renin
Answer briefly:
How does bile help in the digestion of fats?
Describe the process of digestion of protein in stomach.
Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?
Name different types of teeth and their number in an adult human.
Which of the following sphincter controls the passage of food into the stomach?
Emulsification of fats is brought about by ______.
Mark the right statement among the following
Correct the following statement by deleting one of entries (given in bold).
Goblet cells are located in the intestinal mucosal epithelium and secrete chymotrypsin/mucus.
Correct the following statement by deleting one of entries (given in bold).
Fats are broken down into di- and monoglycerides with the help of amylase/ lipases.
Correct the following statement by deleting one of entries (given in bold).
Saliva contains enzymes that digest starch/protein.
Name the part of the alimentary canal where major absorption of digested food takes place. What are the absorbed forms of different kinds of food materials?
Correct the statement given below by the right option shown in the bracket against them.
Rennin is a proteolytic enzyme found in gastric juice in (infants/adults).
Correct the statement given below by the right option shown in the bracket against them.
Pancreatic juice and bile are released through. (intestine- pancreatic/hepato-pancreatic duct)
How is the intestinal mucosa protected from the acidic food entering from stomach?
Describe the enzymatic action on fats in the duodenum.
