Digestion and Absorption Test

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Digestion and Absorption Test - 44

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Weekly Quiz Competition

Question 1
1 / -0

The lubricant mucin of saliva is made up of

A
Unsaturated fats

B
Polysaccharides

C
Glycoproteins

D
Phospholipids

Solution

The lubricant mucin of saliva is made up of glycoproteins. Mucin is a mucopolysaccharide or glycoprotein that is the chief constituent of mucus.
This lubrication helps in providing protection of body cavity linings.
Hence, the correct answer is option C.
Question 2
1 / -0

Which one of the following is a non-pathogenic bacteria of human intestines?

A
Mycobacterium sp.

B
Escherichia coli

C
Entamoeba coli

D
Balantidium coli

Solution

E.coli strains are normally present in the large intestines where they help in the production of vitamin $$K_2$$ (menaquinone 7 - 11)
So, the correct answer is 'Escherichia coli'
Question 3
1 / -0

The digestive enzyme salivary amylase begins the digestion of

A
Protein

B
Nucleic acids

C
Fats

D
Carbohydrates

Solution

The digestive enzyme salivary amylase begins the digestion of carbohydrates. An amylase is an enzyme that catalyses the hydrolysis of starch into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion.
Pepsin is the active protein-digesting enzyme of the stomach. Pepsin acts on protein molecules by breaking the peptide bonds that hold the molecules together. Digestion of protein is completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin, and carboxypeptidase.
Lipids, or fat, go undigested in your digestive tract until they reach your small intestine, where they meet bile. Bile contains bile salts, which act as an emulsifier of lipids. This breaks the large fat droplets into smaller droplets that are then easier for the fat-digesting enzyme pancreatic lipase to digest.
Question 4
1 / -0

The lymph vessel which aids in absorption and distribution of fats is

A
Lacteal

B
Villi

C
Rugae

D
Vene cava
Solution
- A lacteal is one of the lymphatic capillaries that help to absorb dietary fats in the small intestine.
Therefore, the correct answer is option A.
Question 5
1 / -0

Digestion is

A
Conversion of large food particles into small food particles.

B
Conversion of small food particles into large food particles.

C
Conversion of food into protoplasm.

D
Conversion of non-diffusible food particles into diffusible food.
Solution
A.Correct option D

B.Explanation for correct option:
- Digestion is the breakdown of large molecules of food into small food molecules so that they can be absorbed into the watery blood plasma.
- In certain organisms, these smaller substances are absorbed through the small intestine into the bloodstream directly.
- Thus digestion is a form of catabolism that is often divided into two processes based on how food is broken down mechanical and chemical digestion.
Question 6
1 / -0

The proteins digesting enzyme in stomach which degrades milk proteins

A
Pepsin

B
Trypsin

C
Ptyalin

D
Rennin

Solution

Pepsin is a proteolytic enzyme. The enzyme helps to digest proteins. Pepsin is secreted by the stomach cells. Cells in the intestine absorb the digestion products of the protein into the bloodstream. Trypsin acts in the small intestine. Ptyalin and amylase work in saliva. Chymosin is known as rennin. It is a proteolytic enzyme synthesized by chief cells in the stomach. Its role in digestion is to curdle or coagulate milk in the stomach. This process occurs in the small babies. If milk were not coagulated, it would rapidly flow through the stomach and miss the opportunity for initial digestion of its proteins.
Therefore, the correct answer is option D.
Question 7
1 / -0

Which one of the following is wrong about the digestive system of a grasshopper?

A
Wall of crop is muscular and its lumen is lined with cutile.

B
A pair of small, branched salivary glands associated to anterior end of midgut.

C
Heptatic caecae are six pairs of glands associated to anterior end of midgut.

D
Malpighian tibules are the thread-like tibules with blunt tips associated to the function of midgut and hindgut.

Solution

Grasshoppers have the typical insect body plan of head, thorax and abdomen.
The thorax and abdomen are segmented and have a rigid cuticle made up of overlapping plates composed of chitin. Hence, Wall of a crop is muscular and its lumen is lined with cutile is wrong about the digestive system of a grasshopper.
So, the correct option is 'Wall of the crop is muscular and its lumen is lined with cutile.'.
Question 8
1 / -0

Break down of proteins into peptones is carried by

A
Pepsin enzyme

B
Lipase enzyme

C
Amylase enzyme

D
Ptyalin

Solution

In the digestive tract, pepsin effects only partial degradation of proteins into smaller units called as peptides, which then either are absorbed from the intestine into the bloodstream or are broken down further by pancreatic enzymes. Lipase acts on lipids. Amylase or ptyalin acts on starch.
Therefore, the correct answer is option A.
Question 9
1 / -0

The inner walls of the stomach and small intestine and the various glands such secrete digestive juices as

A
Salivary

B
Glands

C
The liver and the pancreas

D
All of the above

Solution

The inner walls of the stomach and small intestine and the various glands such secrete digestive juices as salivary glands, various other glands and liver and pancreas. Salivary glands secrete salivary amylase enzyme. The liver is essentially an exocrine gland, secreting bile into the intestine. But, the liver is also an endocrine gland and a blood filter. The liver has a diversity of functions not typically associated with glands. The liver is a metabolic factory, synthesizing and breaking down a variety of substances. The pancreas is a glandular organ in the digestive system and endocrine system of vertebrates. In humans, it is located in the abdominal cavity behind the stomach. It is an endocrine gland producing several important hormones, including insulin, glucagon, somatostatin, and pancreatic polypeptide which circulate in the blood.
Therefore, the correct answer is option D.
Question 10
1 / -0

How is shape of stomach?

A
As V

B
As J

C
As O

D
None of the above

Solution

The stomach is a J-shaped, hollow organ located just inferior to the diaphragm in the left part of the abdominal cavity. It is located between the oesophagus and connects with the duodenum. It has two parts fundus and pyloric.
Therefore, the correct answer is option B.

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Re-Attempt Weekly Quiz Competition

Digestion and Absorption Test - 44

Result

Digestion and Absorption Test - 44

Score

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SHARING IS CARING

Question 1

Unsaturated fats

Polysaccharides

Glycoproteins

Phospholipids

Solution

Question 2

Mycobacterium sp.

Escherichia coli

Entamoeba coli

Balantidium coli

Solution

Question 3

Protein

Nucleic acids

Fats

Carbohydrates

Solution

Question 4

Lacteal

Villi

Rugae

Vene cava

Solution

Question 5

Conversion of large food particles into small food particles.

Conversion of small food particles into large food particles.

Conversion of food into protoplasm.

Conversion of non-diffusible food particles into diffusible food.

Solution

Question 6

Pepsin

Trypsin

Ptyalin

Rennin

Solution

Question 7

Wall of crop is muscular and its lumen is lined with cutile.

A pair of small, branched salivary glands associated to anterior end of midgut.

Heptatic caecae are six pairs of glands associated to anterior end of midgut.

Malpighian tibules are the thread-like tibules with blunt tips associated to the function of midgut and hindgut.

Solution

Question 8

Pepsin enzyme

Lipase enzyme

Amylase enzyme

Ptyalin

Solution

Question 9

Salivary

Glands

The liver and the pancreas

All of the above

Solution

Question 10

As V

As J

As O

None of the above

Solution

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