Tag: digestion

Questions Related to digestion

Which is absorbed in ileum?

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Vitamin K

  2. Bile salt

  3. Fat

  4. Glucose

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Correct Option: D

Middle part of small intestine is

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Ileum

  2. Jejunum

  3. Duodenum

  4. Pyloric region

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Correct Option: B

Which of the following guards the opening of hepatopancreatic duct into the duodenum

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Sphincter of Oddi

  2. Semilunar valve

  3. Ileocaecal valve

  4. Pyloric sphincter

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Correct Option: A

Ileocaecal valve is present in between

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Colon and large intestine

  2. Colon and small intestine

  3. Stomach and small intestine

  4. Cardiac stomach and fundus

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Correct Option: B

In jejunum, which of the following enzymes is required for the digestion of amino acid containing compounds?

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Chymotrypsin

  2. Pepsin

  3. Trypsin

  4. Peptidase

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Correct Option: D
Explanation:

Peptidases are the intestinal proteases, which act on peptides as follows:
$Polypeptide\xrightarrow[Alkaline \,medium]{Polypeptidase} Dipeptides$


$Dipeptide\xrightarrow[Dipeptidase]{Alkaline \,medium} Amino acids$
Pepsin, trypsin, and chymotrypsin, etc are aminopeptidases, which act upon amino groups of the peptide bond. 
Thus the correct answer is option D.

VERY SHORT ANSWER TYPE
Consider the following two statements A & B and select the right from (i)-(iv) about their correctness.
A. Small intestine is shorter than large intestine.
B. Small intestine is wider than large intestine.

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. Both the statements are correct.

  2. Both the statements are wrong.

  3. Statement A is correct, B is wrong.

  4. Statement B is correct, A is wrong.

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Correct Option: A

If the inner surface of the ileum in the human small intestine was smooth, rather than being folded and subdivided into vilii, which of the following statements would be true? 

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. The rate of absorption of digested food molecules would be higher, because the digested food would pass more easily through the digestive tract.

  2. Digestion would not be as effective, because there would be fewer cells secreting trypsin (a protein-digesting enzyme).

  3. Humans would have needed to evolve a much longer small intestine to absorb sufficient nutrients from their food.

  4. Humans would not be able to survive, because the digestive tract would be more susceptible to damage.

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Correct Option: C
Explanation:

The correct answer is (c).

Various types of movements are generated by the ________ layer of the small intestine. 

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. serosa

  2. muscularis

  3. mucosa

  4. sub-mucosa

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Correct Option: B
Explanation:

Various types of movements are generated by the 'muscular' layer of the small intestine.

So the correct option is B.

Which of the following statements is false?

bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. The breakdown of most of biomacromolecules occurs in duodenum.

  2. Simple substances (digested foods) are absorbed in the jejunum and ileum.

  3. Significant digestive activity occurs in large intestine.

  4. Undigested and unabsorbed substances are passed on to the large intestine.

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Correct Option: C
Explanation:

The correct answer is (c).

Match the two columns and select the right one among options given.

Column I Column II
A. Duodenum  (i) A cartilaginous flap
B. Epiglottis  (ii) Small blind sac
C. Glottis  (iii) 'U' shaped structure emerging from the stomach
D. Caecum  (iv) Opening of wind pipe
bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

  1. A-(i), B-(ii), C-(iii), D-(iv)

  2. A-(iv), B-(iii), C-(iv), D-(i)

  3. A-(iii), B-(i), C-(iv), D-(ii)

  4. A-(ii), B-(iv), C-(i), D-(iii)

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Correct Option: C
Explanation:

(A) Duodenum - 'U' shaped structure emerging from the stomach

(B) Epiglottis - A cartilaginous flap
(C) Glottis - Opening of wind pipe
(D) Caecum - Small blind sac
So, the correct answer is (c).