Digestion and Absorption Test

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Digestion and Absorption Test - 37

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Weekly Quiz Competition

Question 1
1 / -0

Where are the lysozymes found?

A
In saliva and tears both

B
In tears

C
In saliva

D
In mitochondria

Solution

Lysozyme is present in secretions from saliva and tears. It is an enzyme which kills the harmful bacteria.
Question 2
1 / -0

Pancreatic juice is

A
Alkaline in nature

B
Acidic in nature

C
Contains variety of enzymes

D
Both A and C
Solution
- Pancreatic juice is a liquid secreted by the pancreas, which contains a variety of enzymes, including trypsinogen, chymotrypsinogen, elastase, carboxypeptidase, pancreatic lipase, nucleases and amylase.
- Pancreatic juice is alkaline in nature due to the high concentration of bicarbonate ions. Hence, Pancreatic juice is alkaline in nature and contains a variety of enzymes.
So, the correct answer is 'both A and C'.
Question 3
1 / -0

Cells of the pancreas are not digested by their own enzymes because

A
Enzymes are secreted in inactive form

B
Cells are lined by mucous membrane

C
Enzymes are released only when needed

D
None of the above

Solution

The protein digesting proteolytic enzymes are secreted as inactive proenzymes like pepsinogen, trypsinogen, chymotrypsinogen, procarboxypeptidase etc. This prevents digestion and damage to the wall of alimentary canal. The pancreatic zymogens are transported to intestine, which are coated by mucous and there the proteolytic enzymes of pancreas are selectively activated. This prevents damage to pancreas themselves from proteolytic enzymes.
Question 4
1 / -0

In rabbit, the digestion of cellulose takes place in

A
Colon

B
Ileum

C
Caecum

D
Rectum

Solution

In herbivores like rabbit, the symbiotic bacteria and protozoans present in the caecum, help in digestion of cellulose into glucose. So, the digestion of cellulose takes place in caecum by the process of decomposition. This decomposition process is very slow. So, very less amount of cellulose is digested at a time in caecum.
Question 5
1 / -0

What is the function of goblet cells?

A
Production of enzyme

B
Production of mucin

C
Production of hormone

D
Production of $$HCl$$

Solution

Goblet cells are the modified simple epithelial columnar cells. It is found in the lining of organs like intestine and respiratory tract. It secretes mucin (glycoprotein) and maintains the layer of mucus. As each cell secretes mucin for mucous production it is called as a unicellular mucous gland.
Question 6
1 / -0

An example of merocrine gland is

A
Sebaceous gland

B
Pineal gland

C
Salivary gland

D
Mammary gland

Solution

Merocrine glands are those glands in which cells secrete their substances by exocytosis from secretory cells into an epithelial walled duct or ducts and thence onto a bodily surface or into the lumen. They are also known as eccrine. Examples include some sweat glands and the salivary glands. Hence, option C is correct answer.
Question 7
1 / -0

Just as hydrochloric acid is for pepsinogen, so is the

A
Haemoglobin to oxygen

B
Enterokinase to typsinogen

C
Bile juice to fat

D
Glucagon to glycogen
Solution
Correct Option: B

Explanation:
- Pepsinogen (inactive form) is an enzyme that is released from the stomach.
- The hydrochloric acid converts the inactive pepsinogen to active pepsin.
- Similarly, enterokinase converts the inactive trypsinogen to active trypsin.
Hence, just as hydrochloric acid acts on pepsinogen, so does enterokinase act on trypsinogen.
Question 8
1 / -0

The digestion of cellulose in rabbit and other herbivorous mammals takes place in

A
Vermiform appendix

B
Colon

C
Caecum

D
Ileum

Solution

Hindgut fermentation is a digestive process seen in monogastric herbivores, animals with a simple, single-chambered stomach. Cellulose is digested with the aid of symbiotic bacteria. The microbial fermentation occurs in the digestive organs that follow the small intestine: the large intestine and caecum.
Question 9
1 / -0

Enzyme present in saliva is

A
Maltase

B
Ptyalin

C
Sucrase

D
Invertase
Solution
Correct Option: B
Explanation:
- The daily secretion of saliva is 1.5lts.
- It has salivary amylase which is ptyalin and has lysozymes.
Hence, the enzyme secreted by saliva is ptyalin.
Question 10
1 / -0

Marasmus disease is caused due to

A
Protein deficiency

B
Obesity

C
Dwarfism

D
Deficiency of vitamins

Solution

Marasmus is caused by protein-energy-malnutrition (PEM) or deficiency of protein. The common symptoms are impaired physical growth, sub-cutaneous fat disappears, ribs become very prominent, limbs become thin and skin becomes dry, thin and wrinkled and loss of weight occurs. The cure is diet with adequate proteins and proper caloric value.

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Digestion and Absorption Test - 37

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Digestion and Absorption Test - 37

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SHARING IS CARING

Question 1

In saliva and tears both

In tears

In saliva

In mitochondria

Solution

Question 2

Alkaline in nature

Acidic in nature

Contains variety of enzymes

Both A and C

Solution

Question 3

Enzymes are secreted in inactive form

Cells are lined by mucous membrane

Enzymes are released only when needed

None of the above

Solution

Question 4

Colon

Ileum

Caecum

Rectum

Solution

Question 5

Production of enzyme

Production of mucin

Production of hormone

Production of $$HCl$$

Solution

Question 6

Sebaceous gland

Pineal gland

Salivary gland

Mammary gland

Solution

Question 7

Haemoglobin to oxygen

Enterokinase to typsinogen

Bile juice to fat

Glucagon to glycogen

Solution

Question 8

Vermiform appendix

Colon

Caecum

Ileum

Solution

Question 9

Maltase

Ptyalin

Sucrase

Invertase

Solution

Question 10

Protein deficiency

Obesity

Dwarfism

Deficiency of vitamins

Solution

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