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Digestion and Absorption · Question 37

AIPMT 2010 (Prelims)MCQMedium📈 Topic in 12% papers+4−1
1

Carrier ions like Na+ facilitate the absorption of substances like

  1. amino acids and glucose
  2. glucose and fatty acids
  3. fatty acids and glycerol
  4. fructose and some amino acids

Answer

(1) amino acids and glucose

Solution

As per NCERT, various nutrients like amino acids, monosaccharides like glucose and electrolytes like Na+ are absorbed into the blood by active transport.

Glucose and amino acids enter the intestinal cells together with Na+ ions (co-transport): the movement of Na+ drives their uptake.

Fatty acids and glycerol, being insoluble, are absorbed as micelles and resynthesised into chylomicrons — no Na+ carrier.

Answer: (1)

Out of syllabusAIPMT 2010 (Prelims)

Keep practising — Digestion and Absorption

2

If for some reason our goblet cells are nonfunctional, this will adversely affect

  1. production of somatostatin
  2. secretion of sebum from the sebaceous glands
  3. maturation of sperms
  4. smooth movement of food down the intestine
Out of syllabusAIPMT 2010 (Prelims)
3

When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from

  1. rickets
  2. kwashiorkor
  3. pellagra
  4. marasmus
Out of syllabusAIPMT 2009
4

A young infant may be feeding entirely on mother's milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to?

  1. Bile pigments passed through bile juice
  2. Undigested milk protein casein
  3. Pancreatic juice poured into duodenum
  4. Intestinal juice
Out of syllabusAIPMT 2009
5

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. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
  3. About 60% of starch is hydrolysed by salivary amylase in our mouth.
  4. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
Out of syllabusAIPMT 2009
6

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

  1. Starch and fat
  2. Fat and cellulose
  3. Starch and cellulose
  4. Protein and starch
Out of syllabusAIPMT 2009
7

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product?

  1. Small intestine : Proteins Pepsin amino acids
  2. Stomach : Fats Lipase micelles
  3. Duodenum : Triglycerides Trypsin monoglycerides
  4. Small intestine : Starch -Amylase disaccharide (maltose)
Out of syllabusAIPMT 2008
8

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

  1. In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.
  2. Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin.
  3. Gastric juice will be deficient in chymosin.
  4. Gastric juice will be deficient in pepsinogen.
Out of syllabusAIPMT 2008
9

Which one of the following is a fat-soluble vitamin and its related deficiency disease?

  1. Retinol – Xerophthalmia
  2. Cobalamine – Beri-beri
  3. Calciferol – Pellagra
  4. Ascorbic acid – Scurvy
Out of syllabusAIPMT 2007
10

Secretin and cholecystokinin are digestive hormones. They are secreted in

  1. pyloric stomach
  2. duodenum
  3. ileum
  4. oesophagus.
Out of syllabusAIPMT 2005
11

Epithelial cells of the intestine involved in food absorption have on their surface

  1. pinocytic vesicles
  2. microvilli
  3. zymogen granules
  4. phagocytic vesicles.
Out of syllabusAIPMT 2005

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