Digestion and Absorption Test

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Digestion and Absorption Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

Villi are present in

A
Stomach

B
Intestine

C
Oesophagus

D
Both A and B
Solution
Villi are small finger-like projections on the surface of the intestine which increase the area of absorption.
So, the correct answer is 'Intestine'.
Question 2
1 / -0

The number of basic layers of inner wall of the alimentary canal is

A
One

B
Two

C
Three

D
Four

Solution

The alimentary canal has four different layers. From innermost to outmost, the order goes mucosa, submucosa, muscularis, and serosa- innermost produces mucous which helps food move along and protects more delicate tissues from being digested.
So, the correct answer is 'Four'.
Question 3
1 / -0

Which of the following electrolyte pumps helps in active absorption of glucose in the intestinal walls?

A
Sodium

B
Potassium

C
Chloride

D
Bicarbonate

Solution

Active absorption occurs against the concentration gradient which requires energy. $$Na^+$$ which transports by facilitated transport that means it is taken by a protein carrier which has a peculiarity. It drags glucose with sodium ion from the lumen of the intestine to blood and helps in its absorption.
So the correct option is 'Sodium'.
Question 4
1 / -0

J-shaped muscular bag that churns the food is

A
Small intestine

B
Stomach

C
Large intestine

D
Oesophagus

Solution

Stomach: It is a muscular J- shaped thickly walled bag. Stomach churns the food to mix digestive juices. The food in the stomach is churned into semi-solid. The churned semi-solid food is called chime.
So, the correct answer is 'Stomach'.
Question 5
1 / -0

Which of the following is the site of synthesis of chylomicrons?

A
Cells in the wall of small intestine

B
Microvilli of the small intestine

C
Intestinal lumen

D
Lymphatic capillaries or lacteals

Solution

Chylomicrons are the emulsified fat that is coated with proteins. These are transported through lymphatic vessels and absorb by blood from them. It is synthesized in the small intestine by enterocytes.
So, the correct option is 'Cells in the wall of small intestine'.
Question 6
1 / -0

The bacteria live in the large intestine of human are

A
Bifidobacterium

B
Methanogens

C
Lactobacillus

D
All of the above

Solution

There are many bacteria that live in the large intestine of human. They live in symbiotic association. These are Lactobacillus, Bifidobacterium, Methanogens, Bacteroids, Enterococcus, Escherichia coli. Lactobacillus help in digestion, maintaining the pH balance and replacing the healthy bacteria in the gastrointestinal tract. It acts as a probiotic. Bifidobacterium is also a probiotic. It helps in metabolism of undigested carbohydrates. It also prevents pathogen colonization. Methanogen helps in the fermentation of organic matter to obtain energy. They help in breakdown of complex indigestible carbohydrates. Bacteroids helps in amino acid biosynthesis. Enterococcus helps in digestion of undigested carbohydrates and fibres.
Thus, the correct answer is 'All of the above.'
Question 7
1 / -0

When a piece of bread is chewed it tastes sweet because

A
Of the enzyme salivary amylase

B
Of conversion of complex sugars into simple sugars

C
conversion of protein

D
Both A and B

Solution

Saliva of mouth contains salivary amylase an enzyme which converts starch into maltose and breaks it into a simpler form which gives a sweet taste.
So the correct option is 'All of the above'.
Question 8
1 / -0

About how much saliva does a person produce each day?

A
100 ml

B
1 to 2 litre

C
500 ml

D
250 ml

Solution

Our salivary glands, which are located on the inside of each cheek, at the bottom of the mouth and under the jaw at the front of the mouth, churn out about 1 to 2 liters of spit every day.
So, the correct answer is '1 to 2 litre'.
Question 9
1 / -0

The bile duct and the pancreatic duct open together into the duodenum as the common hepatopancreatic duct which is guarded by a sphincter called .........

A
Pyloric sphincter

B
Sphincter of Oddi

C
Ileocecal Sphincter

D
Anal Sphincter
Question 10
1 / -0

Find out the correct sequence for the layers in the wall of ileum from inner to outer side.

A
Mucosa, Circular muscles, Oblique muscles, Longitudinal muscles, Serosa

B
Muscularis interna, Muscularis externa, Submucosa, Visceral peritoneum

C
Mucosal epithelium, Oblique muscles, Circular muscles, Longitudinal muscles, Submucosa

D
Mucosa, Submucosa, Muscularis externa, Circular muscles, Longitudinal muscles, Serosa
Solution
The ileum is the final section of the small intestine in which the remaining of the food is absorbed. The ileum is covered with different layers as it’s structure.
So the correct option is 'Mucosa, Submucosa, Muscularis external, circular muscles, longitudinal muscles,serosa'.

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Digestion and Absorption Test - 65

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Digestion and Absorption Test - 65

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SHARING IS CARING

Question 1

Stomach

Intestine

Oesophagus

Both A and B

Solution

Question 2

One

Two

Three

Four

Solution

Question 3

Sodium

Potassium

Chloride

Bicarbonate

Solution

Question 4

Small intestine

Stomach

Large intestine

Oesophagus

Solution

Question 5

Cells in the wall of small intestine

Microvilli of the small intestine

Intestinal lumen

Lymphatic capillaries or lacteals

Solution

Question 6

Bifidobacterium

Methanogens

Lactobacillus

All of the above

Solution

Question 7

Of the enzyme salivary amylase

Of conversion of complex sugars into simple sugars

conversion of protein

Both A and B

Solution

Question 8

100 ml

1 to 2 litre

500 ml

250 ml

Solution

Question 9

Pyloric sphincter

Sphincter of Oddi

Ileocecal Sphincter

Anal Sphincter

Question 10

Mucosa, Circular muscles, Oblique muscles, Longitudinal muscles, Serosa

Muscularis interna, Muscularis externa, Submucosa, Visceral peritoneum

Mucosal epithelium, Oblique muscles, Circular muscles, Longitudinal muscles, Submucosa

Mucosa, Submucosa, Muscularis externa, Circular muscles, Longitudinal muscles, Serosa

Solution

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