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Digestion and Absorption · Question 10

NEET (UG) 2020MCQEasy📈 Topic in 25% papers+4−1
1

The enzyme enterokinase helps in conversion of

  1. pepsinogen into pepsin
  2. protein into polypeptides
  3. trypsinogen into trypsin
  4. caseinogen into casein

Answer

(3) trypsinogen into trypsin

Solution

As per NCERT, enterokinase secreted by the intestinal mucosa activates the inactive pancreatic enzyme trypsinogen into active trypsin:

Trypsinogen Enterokinase Trypsin

Trypsin then activates the other pancreatic proenzymes.

(Pepsinogen is activated by HCl, and caseinogen is converted to casein by rennin.)

Answer: (3)

Out of syllabusNEET (UG) 2020

Keep practising — Digestion and Absorption

2

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

  1. Oxyntic Cells
  2. Duodenal Cells
  3. Chief Cells
  4. Goblet Cells
Out of syllabusNEET (UG) 2019
3

Match the following structures with their respective location in organs : Select the correct option

  1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  3. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
  4. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
Out of syllabusNEET (UG) 2019
4

Which of the following terms describe human dentition?

  1. Pleurodont, Monophyodont, Homodont
  2. Thecodont, Diphyodont, Homodont
  3. Pleurodont, Diphyodont, Heterodont
  4. Thecodont, Diphyodont, Heterodont
Out of syllabusNEET 2018
5

Which of the following gastric cells indirectly help in erythropoiesis?

  1. Mucous cells
  2. Parietal cells
  3. Chief cells
  4. Goblet cells
Out of syllabusNEET 2018
6

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

  1. Paneth cells
  2. Zymogen cells
  3. Kupffer cells
  4. Argentaffin cells
Out of syllabusNEET 2017
7

Which of the following options best represents the enzyme composition of pancreatic juice?

  1. Amylase, Pepsin, Trypsinogen, Maltase
  2. Peptidase, Amylase, Pepsin, Rennin
  3. Lipase, Amylase, Trypsinogen, Procarboxypeptidase
  4. Amylase, Peptidase, Trypsinogen, Rennin
Out of syllabusNEET 2017
8

A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

  1. Canines
  2. Pre-molars
  3. Molars
  4. Incisors
Out of syllabusNEET 2017
9

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

  1. Pyloric sphincter
  2. Sphincter of Oddi
  3. Semilunar valve
  4. Ileocaecal valve
Out of syllabusNEET 2016 (Phase 1)
10

In the stomach, gastric acid is secreted by the

  1. peptic cells
  2. acidic cells
  3. gastrin secreting cells
  4. parietal cells.
Out of syllabusNEET 2016 (Phase 1)
11

The enzyme that is not present in succus entericus is

  1. nucleosidase
  2. lipase
  3. maltase
  4. nuclease.
Out of syllabusAIPMT 2015

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