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Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme?/ How is it activated?

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प्रश्न

Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme?/ How is it activated?

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उत्तर

The intestinal wall secretes trypsinogen. It is activated into trypsin by enterokinase.

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पाठ 16: Digestion and Absorption - Exercises [पृष्ठ ९३]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
पाठ 16 Digestion and Absorption
Exercises | Q 2. | पृष्ठ ९३

संबंधित प्रश्‍न

Answer briefly:

How does bile help in the digestion of fats?


Bile juice contains no digestive enzymes, yet it is important for digestion. Why?


Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?


What would happen if HCl were not secreted in the stomach?


How does butter in your food gets digested and absorbed in the body?


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?


Define digestion in one sentence.


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.


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)


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?


How are the activities of gastro-intestinal tract regulated?


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.


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