Digestion and Absorption Test

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Digestion and Absorption Test - 55

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Weekly Quiz Competition

Question 1
1 / -0

Curdling of milk in small intestine would occur with the help of

A
Rennin

B
Erepsin

C
Trypsin

D
Chymotrypsin

Solution

Curdling of milk in small intestine is due to the presence of chymotrypsin. In babies curdling of milk occurs in stomach due to the presence of enzyme renin but in adults curdling occurs in small intestine by chymotrypsin enzyme which coagulate milk protein casein into curd.
So, the correct option is is 'Chymotrypsin'.
Question 2
1 / -0

Which is different?

A
Gastrin

B
Secretin

C
Ptyalin

D
Glucagon
Solution
Correct Answer: (C) Ptyalin.
Explanation:
Gastrin hormone is secreted by the G cells of the stomach. and the cells that are present in the upper side of the small intestine.
Secretin hormone is released by the S cells of our duodenum.
Glucagon hormone is secreted by the pancreas.
While Ptyalin is an enzyme that is secreted by the salivary gland.
Hence, Ptyalin alone is an enzyme while all the others are the hormone. So, option (C) is the odd one and hence the correct option.
Question 3
1 / -0

In small intestine, active absorption occurs in case of ______.

A
Glucose

B
Amino acids

C
$$Na^+$$

D
All the above

Solution

The small intestine is a narrow tube about seven meters long in adults. The maximum absorption takes place in the small intestine. Amino acids, $$Na^+$$, glucose, galactose are absorbed by active transport. Water and lipids are absorbed by passive diffusion throughout the small intestine.
So, the correct option is D.
Question 4
1 / -0

Where does hepatopancreatic duct open

A
Ileum

B
Duodenum

C
Jejunum

D
Junction of duodenum with jejunum

Solution

The hepatopancreatic duct is a spherical structure located at the site of the confluence of the common bile duct and pancreatic duct, marking the entry point of bile and pancreatic juice into the duodenum.
So, the correct answer is option B.
Question 5
1 / -0

Digestion of carbohydrates occurs in

A
Buccal cavity

B
Stomach

C
Intestine

D
All the above
Question 6
1 / -0

Secretin and cholecystokinin are secreted by

A
Ileum

B
Oesophagus

C
Duodenum

D
Pyloric stomach

Solution

Secretin is secreted by S cells in the duodenum and affects numerous other organs systems. Besides regulating the growth of the epithelial cells in the pancreas and biliary system, secretin additionally exerts trophic effects. Cholecystokinin is secreted in the duodenum and is responsible for stimulating the digestion of fat and protein.
So, option C is the correct option.
Question 7
1 / -0

Food bolus after passing through alkaline medium in the alimentary canal is

A
Chylomicron

B
Chyme

C
Chyle

D
Fat body
Question 8
1 / -0

What will happen if secretion of parietal cells of gastric glands is blocked?

A
Gastric juice is deficient of pepsinogen

B
Gastric juice is deficient of chymosin

C
Deficiency of HCl leads to nonconversion of inactive pepsinogen into active pepsin

D
Nonrelease of enterokinase from duodenal mucosa and non-conversion of trypsinogen into trypsin

Solution

Gastric glands are numerous microscopic tubular glands formed by the epithelium of stomach. The parietal cells (oxyntic cells) are large and most numerous on the sidewalls of gastric glands. They secrete hydrochloric acid and castle intrinsic factor. The peptic cells (zymogen) cells of gastric glands secrete gastric digestive enzymes as proenzymes-pepsinogen and prorennin and a small amount of gastric amylase and gastric lipase. The hydrochloric acid maintains a strongly acidic pH of about 1.5 to 2.5 in the stomach. HCl converts pepsinogen and prorennin to pepsin and rennin respectively.
So, the correct answer is 'Deficiency of HCl leads to nonconversion of inactive pepsinogen into active pepsin'.
Question 9
1 / -0

Alimentary canal of herbivorous animals is

A
Short

B
Long

C
Wide

D
Thin
Question 10
1 / -0

Absorption of glycerol, fatty acids and monoglycerides takes place by:

A
Lymph vessels within villi

B
Walls of stomach

C
Colon

D
Capillaries within villi

Solution

Capillary walls contain an enzyme called lipoprotein lipase that dismantles the triglycerides in the lipoproteins into fatty acids and glycerol, thus enabling these to enter into the adipose cells.
So, option A is the correct answer.

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Digestion and Absorption Test - 55

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Digestion and Absorption Test - 55

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SHARING IS CARING

Question 1

Rennin

Erepsin

Trypsin

Chymotrypsin

Solution

Question 2

Gastrin

Secretin

Ptyalin

Glucagon

Solution

Question 3

Glucose

Amino acids

$$Na^+$$

All the above

Solution

Question 4

Ileum

Duodenum

Jejunum

Junction of duodenum with jejunum

Solution

Question 5

Buccal cavity

Stomach

Intestine

All the above

Question 6

Ileum

Oesophagus

Duodenum

Pyloric stomach

Solution

Question 7

Chylomicron

Chyme

Chyle

Fat body

Question 8

Gastric juice is deficient of pepsinogen

Gastric juice is deficient of chymosin

Deficiency of HCl leads to nonconversion of inactive pepsinogen into active pepsin

Nonrelease of enterokinase from duodenal mucosa and non-conversion of trypsinogen into trypsin

Solution

Question 9

Short

Long

Wide

Thin

Question 10

Lymph vessels within villi

Walls of stomach

Colon

Capillaries within villi

Solution

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