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Digestion and Absorption · Question 26

NEET 2013MCQMedium📈 Topic in 12% papers+4−1
1

Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.

  1. array|l|l| Column I & Column II \ Glycerol, fatty acids & Duodenum, move as chylomicrons \ array
  2. array|l|l| Column I & Column II \ Cholesterol, maltose & Large intestine, active absorption \ array
  3. array|l|l| Column I & Column II \ Glycine, glucose & Small intestine, active absorption \ array
  4. array|l|l| Column I & Column II \ Fructose, Na+ & Small intestine, passive absorption \ array

Answer

(3) array|l|l| Column I & Column II \ Glycine, glucose & Small intestine, active absorption \ array

Solution

As per NCERT, glucose, amino acids (e.g. glycine) and some electrolytes like Na+ are absorbed into the blood by active transport in the small intestine.

(1) Fatty acids and glycerol form micelles; they are reformed into chylomicrons inside the intestinal mucosa and pass into the lacteals, not 'move as chylomicrons' in the duodenum.

(2) Maltose is not absorbed (it is first digested to glucose); absorption occurs mainly in the small intestine, not the large intestine.

(4) Fructose is absorbed by facilitated transport with Na+ as carrier ion, and Na+ by active transport, not passive absorption.

Answer: (3)

Out of syllabusNEET 2013

Keep practising — Digestion and Absorption

2

A healthy person eats the following diet – 5 g raw sugar, 4 g albumin, 10 g pure buffalo ghee adulterated with 2 g vegetable ghee (hydrogenated vegetable oil) and 5 g lignin. How many calories he is likely to get?

  1. 126
  2. 164
  3. 112
  4. 144
Out of syllabusNEET 2013 (Karnataka)
3

Which enzymes are likely to act on the baked potatoes eaten by a man, starting from the mouth and as it moves down the alimentary canal?

  1. Pancreatic amylase Salivary amylase Lipases
  2. Disaccharidase like maltase Lipases Nucleases
  3. Salivary amylase Pancreatic amylase Disaccharidases
  4. Salivary maltase Carboxy peptidase Trypsinogen
Out of syllabusNEET 2013 (Karnataka)
4

Where do certain symbiotic microorganisms normally occur in human body?

  1. Caecum
  2. Oral lining and tongue surface
  3. Vermiform appendix and rectum
  4. Duodenum
Out of syllabusAIPMT 2012 (Mains)
5

Anxiety and eating spicy food together in an otherwise normal human, may lead to

  1. indigestion
  2. jaundice
  3. diarrhoea
  4. vomiting
Out of syllabusAIPMT 2012 (Prelims)
6

One of the constituents of the pancreatic juice which is poured into the duodenum in humans is

  1. trypsinogen
  2. chymotrypsin
  3. trypsin
  4. enterokinase
Out of syllabusAIPMT 2011 (Mains)
7

Which one of the following correctly represents the normal adult human dental formula?

  1. 33, 11, 32, 11
  2. 22, 11, 32, 33
  3. 22, 11, 22, 33
  4. 33, 11, 33, 33
Out of syllabusAIPMT 2011 (Mains)
8

Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of

  1. epiglottis
  2. diaphragm
  3. neck
  4. tongue
Out of syllabusAIPMT 2011 (Prelims)
9

Which one of the following enzymes carries out the initial step in the digestion of milk in humans?

  1. Trypsin
  2. Pepsin
  3. Rennin
  4. Lipase
Out of syllabusAIPMT 2011 (Prelims)
10

If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?

  1. The pancreatic enzymes and specially the trypsin and lipase will not work efficiently.
  2. The pH of stomach will fall abruptly.
  3. Steapsin will be more effective.
  4. Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.
Out of syllabusAIPMT 2010 (Mains)
11

Jaundice is a disorder of

  1. excretory system
  2. skin and eyes
  3. digestive system
  4. circulatory system
Out of syllabusAIPMT 2010 (Mains)

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