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Question
Describe the enzymatic action on fats in the duodenum.
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Solution
In the duodenum, fats are broken down by pancreatic lipases with the help of bile into di- and monoglycerides.
\[\ce{Fats ->[Lipases] Diglycerides -> Monoglycerides}\]
Intestinal lipases act on d- and monoglycerides and convert them into fatty acids and glycerol.
\[\ce{Di - and monoglycerides ->[Lipases] Fatty acids + Glycerol}\]
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RELATED QUESTIONS
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
Match column I with column II
| Column I | Column II | ||
| a | Bilirubin and biliverdin | 1 | Parotid |
| b | Hydrolysis of starch | 2 | Bile |
| c | Digestion of fat | 3 | Lipases |
| d | Salivary gland | 4 | Amylases |
Answer briefly:
How does bile help in the digestion of fats?
Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?
How are polysaccharides and disaccharides digested?
What would happen if HCl were not secreted in the stomach?
How does butter in your food gets digested and absorbed in the body?
Which of the following sphincter controls the passage of food into the stomach?
Mark the right statement among the following
Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme?/ How is it activated?
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 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?
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.
