Name the enzymes for protein digestion in the gastric, pancreatic and intestinal juices, the substrate they digest, and the products of their action.

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Solution

Pepsin in the gastric juice acts on the proteins and forms peptones and proteoses.
Trypsin, chymotrypsin and carboxypeptidases are the proteolytic enzymes found in pancreatic juice which acts on the proteins, peptones and proteoses and forms dipeptides
Dipeptidases found in intestinal juice acts on dipeptides to form amino acids.

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The enzymes in pancreatic juice help in the digestion of

Q. Find out the correct match of the organ, its enzymes and its function.

Organ	Enzymes	Functions
Liver	Lipases	Help in emulsification of fats, along with bile salts
Acini of pancreas	Amylopsin (pancreatic juice)	Digestion of animal starch into maltose
Stomach	Renin (in gastric juice)	Converts caesin into paracraesin i.e curdling of milk
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Q. What is common to the following:saliva, pancreatic juice, gastric juice
(a) All of them are organs of digestion.
(b) All of them contain enzymes that help in digestion.
(c) All of them help in digestion of fat.
(d) All of them are enzymes.

Q. Match the digestive juices with the enzymes given under. Choose the choice which gives the correct combination of the alphabets of the two columns.

	List I (Digestive juices)		List II (Enzymes)
A	Saliva	p	Maltase
B	Gastric juice	q	Trypsinogen
C	Pancreatic juice	r	Ptyalin
D	Intestinal juice	s	Pepsin
		t	Cellulase

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