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प्रश्न
Bile juice contains no digestive enzymes, yet it is important for digestion. Why?
उत्तर
Bile is a digestive juice secreted by the liver. Although it does not contain any digestive enzymes, it plays an important role in the digestion of fats. Bile juice contains bile salts, bile pigments like bilirubin, biliverdin and phospholipids. Bile salts break down large fat globules into smaller globules so that the pancreatic enzymes can easily act on them. This process is known as emulsification of fats. Bile juice also makes the medium alkaline and activates lipase.
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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
Choose the correct answer among the following:
Succus entericus is the name given to
(i) a junction between ileum and large intestine
(ii) intestinal juice
(iii) swelling in the gut
(iv) appendix
Answer briefly:
How does bile help in the digestion of fats?
Describe the process of digestion of protein in stomach.
How are polysaccharides and disaccharides digested?
What would happen if HCl were not secreted in the stomach?
Emulsification of fats is brought about by ______.
Mark the right statement among the following
The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall. What do we call the food then?
Name the enzymes involved in the breakdown of nucleotides into sugars and bases?
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.
Dipeptides, disaccharides and glycerides are broken down into simple substances in region of small intestine. (jejunum/duodenum)
How is the intestinal mucosa protected from the acidic food entering from stomach?
Describe the enzymatic action on fats in the duodenum.
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal.
