Question

Complete the given table.

Parts of the digestive system	Enzyme secreted	Functions performed
_______________	Salivary amylase	Starch$\to$_______________
Stomach	Pepsin _______________	_______________$\to$ proteoses and peptones casein$\to$insouable curd (paracasein)
_______________	Bile juice	fat emulsification
Pancrease	_______________ _______________ Amylase	protein, proteoses and peptones$\to$_______________ _______________$\to$fatty acids and _______________ _______________$\to$maltose
_______________	Erepsin _______________ Sucrase _______________	peptones and _______________$\to$_______________ maltose $\to$ _______________ _______________$\to$ _______________ and _______________ lactose $\to$glucose and _______________

Answer 1

Parts of the digestive system: Salivary glands

1. Enzyme secreted: Salivary amylase
2. Functions performed: Salivary glands secrete saliva which contains salt, mucus and digestive enzyme. Digestive enzyme present in saliva is salivary amylase which transforms starch into maltose.

Starch$\to$Maltose

Parts of the digestive system: Stomach

1. Enzyme secreted: Pepsin, Renin
2. Functions performed: The gastric juice secreted by stomach contains hydrochloric acid and two digestive enzymes namely pepsin and renin. Pepsin converts large protein molecules into simple proteoses and peptones while renin converts casein into insoluble curd called paracasein.

Proteins $\stackrel{\mathrm{pepsin}}{\to }$ proteoses and peptones

casein$\stackrel{\mathrm{renin}}{\to }$insouable curd (paracasein)

Parts of the digestive system: Pancreas

1. Enzyme secreted: Bile juice
2. Functions performed: Liver secrete bile juice. Bile juice does not contain any digestive enzymes. It helps in emulsification of fat (breaking of large fat globules into small fat droplets)

Parts of the digestive system: Pancreas

1. Enzyme secreted: Trypsin, Lipase, Amylase.
2. Functions performed: Pancreatic juice secreted by pancreas contain three digestive enzymes namely trypsin, amylase and lipase.

protein, proteoses and peptones$\stackrel{\mathrm{trypsin}}{\to }$Polypeptides

Fats $\stackrel{\mathrm{lipase}}{\to }$fatty acids and glycerol

Undigested starch $\stackrel{\mathrm{Amylase}}{\to }$maltose

Parts of the digestive system: Intestine

1. Enzyme secreted: Erepsin, maltase, sucrase and lactase.
2. Functions performed: Intestine secretes intestinal juice and it contains digestive enzymes such as erepsin, maltase, sucrase and lactase.

peptones and peptides$\stackrel{\mathrm{erepsin}}{\to }$amino acids

maltose $\stackrel{\mathrm{maltase}}{\to }$ glucose

sucrose $\stackrel{\mathrm{sucrase}}{\to }$ glucose and fructose

lactose $\stackrel{\mathrm{lactase}}{\to }$ glucose and galactose

Parts of the digestive system	Enzyme secreted	Functions performed
Salivary glands	Salivary amylase	Starch$\to$Maltose
Stomach	Pepsin Renin	Proteins $\to$ proteoses and peptones casein$\to$insoluable curd (paracasein)
Liver	Bile juice	fat emulsification
Pancreas	Trypsin Lipase Amylase	protein, proteoses and peptones$\to$Polypeptides Fats $\to$fatty acids and glycerol Undigested starch$\to$maltose
Intestine	Erepsin maltase Sucrase lactase	peptones and peptides$\to$amino acids maltose $\to$ glucose sucrose $\to$ glucose and fructose lactose $\to$glucose and galactose