Solve
Guides
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Standard XII
Biology
Absorption of Food
Question

Which one of the following statements is true regarding digestion and absorption of food in humans?
  1. Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+
  2. About 60% of starch is hydrolysed by salivary amylase in our mouth
  3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
  4. Oxyntic cells in our stomach secrete the proenzyme pepsinogen

A
Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
B
Oxyntic cells in our stomach secrete the proenzyme pepsinogen
C
Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+
D
About 60% of starch is hydrolysed by salivary amylase in our mouth
Open in App
Solution
Verified by Toppr

After digestion, most of the monosaccharides are absorbed into the body via active transport using sodium ions. Fructose is absorbed via facilitated diffusion. Amino acids are absorbed via secondary active transport using sodium ions. Chylomicrons cannot enter blood capillaries and hence enter lacteals. Only 5% of starch is hydrolyzed in the mouth. Proenzyme pepsinogen is secreted by chief cells in the stomach

So, the correct answer is 'Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+'.


Was this answer helpful?
2
Similar Questions
Q1

Correct the following statements by deleting one of entries (given in bold).
(a) Goblet cells are Located in the intestinal mucosal epithelium and secrete chymotrypsin/mucus.
(b) Fats are broken down into di-and monoglycerides with the help of amylase/lipases.
(c) Gastric glands of stomach mucosa have oxyntic cell/chief cells which secrete HCl.
(d) Saliva contains enzymes that digest starch/protein

View Solution
Q2
Which of the following statements is/are incorrect?
(i) Absorption of simple sugar, alcohol, some water and medicines takes place in stomach.
(ii) Maximum water absorption occurs in large intestine.
(iii) Small intestine is the major site of digestion and absorption of food.
(iv) Fatty acid and glycerol are absorbed by lacteals.
(v) Nothing is absorbed in mouth and large intestine.
View Solution
Q3

Read the following statements regarding absorption of fats in small intestine and select the incorrect option(s).

I. Absorption takes place through the mucosal lining of the small intestine, and when these products pass through the mucosa, they enter the epithelial cells.

II. Triglycerides are the major form of fat stored by the body. Triglycerides are coated by proteins to form chylomicrons.

III. The lacteals are found in the fingerlike projections of the intestinal wall, called the villi.

IV. Absorption of glucose, amino acids and fatty acids follow a similar path.


View Solution
Q4
Amino acids produced by digestion of proteins are absorbed from intestine through
View Solution
Q5
Chylomicrons are small lipoproteins transported from intestine into blood stream. Is this correct
View Solution