Digestion & Absorption - Live Session - NEET 2020Contact Number: 9667591930 / 8527521718Digestion & Absorption - Live Session - NEET 2020Contact Number: 9667591930 / 8527521718Tick mark the false statement.
1. About 60% starch is hydrolysed in buccal cavity by the enzymes salivary amylase
2. Salivary amylase acts on starch and is converted into maltose
3. Salivary amylase acts at optimum pH 6.8
4. Stomach stores the food for 4-5 hours
Protein coated fat globules are called (i) , which are transported into (ii) in villi. Select the option which correctly fills up both the blanks.
1. Cholesterol, capillaries
2. Chylomicrons, lacteals
3. Chylomicrons, capillaries
4. Phospholipids, lacteals
Dental formula for the monophyodont teeth of human is
1.
2.
3.
4.
Which of the following is the function of enterogastrone?
1. It inhibits the secretion of gastric juice
2. It stimulates the secretion of digestive juice in the stomach
3. It stimulates the flow of pancreatic juice
4. It regulates the flow of bile
A person who is on a long hunger strike and is surviving only on water, will have:
1. Less urea in his urine
2. More sodium in his urine
3. Less amino acids in his urine
4. More glucose in his blood
The primary dentition in human differs from permanent dentition in not having one of the following type of teeth
1. Incisors
2. Canine
3. Premolars
4. Molars
If for some reason our goblet cells are non-functional this will adversely affect
1. Smooth movement of food down the intestine
2. Production of somatostatin
3. Secretion of sebum from the sebaceous glands
4. Maturation of sperms
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
Constipation can be prevented or removed by
1. Taking more roughage
2. Taking purgatives rich in magnesium salt
3. Taking distilled water
4. Both (1) and (2)
Which of the following structure controls the peristaltic movement of alimentary canal?
1. Myenteric plexus
2. Auerbach plexus
3. Meissner's plexus
4. Both (1) and (2)
The main enzymes present in the gastric juice are
1. Trypsin, pepsin and lipase
2. Pepsin, amylase and trypsin
3. Pepsin, rennin and carboxypeptidase
4. Pepsin, lipase and rennin
A moderately active person requires energy per day
1. 2000 kcal
2. 1000 kcal
3. 750 kcal
4. 2800 kcal
Match the following columns
Column I Column II
a. Lysozyme (i) HCl
b. Peptic cells (ii) Antibacterial enzyme
c. Saliva (iii) Sublingual gland
d. Oxyntic cells (iv) Pepsinogen
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(iv), c(iii), d(i)
3. a(i), b(ii), c(iv), d(iii)
4. a(ii), b(iv), c(i), d(iii)
Pernicious anaemia is caused by the deficiency of vitamin
1. B1
2. B12
3. C
4. D
Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.
Column I Column II
1. Glycine and glucose and active Small intestine
absorption
2. Fructose and Na+ passive Small intestine
absorption
3. Glycerol and fatty acids Duodenum and
move as chilomicrons
4. Cholesterol and maltose Large
intestine and active absorption
For person suffering from high blood cholesterol, the physicians recommend
1. pure 'deshi ghee' or butter
2. vegetable oil such as groundnut oil
3. red meat with layers of fats
4. vanaspati margarine
Release of pancreatic juice is stimulated by
1. enterokinase
2. cholecystokinin
3. secretion
4. Both (2) and (3)
Cholecystokinin and duocrinin are secreted by
1. adrenal cortex
2. thyroid gland
3. pancreas
4. intestine
What is common among amylase, rennin and trypsin?
1. These all are proteins
2. There all are proteolytic enzymes
3. There are produced in stomach
4. These act as a pH lower than 7
Which one of the following vitamin can be synthesised by bacteria inside the gut?
1. B
2. D
3. C
4. Both (2) and (3)
Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability?
1. Thiamine --- Beri-Beri
2. Protein --- Kwashiorkor
3. Nicotinamide --- Pellagra
4. Iodine --- Goitre
The haemorrhagic disease of new born is caused due to the deficiency of
1. vitamin-A
2. vitamin-B1
3. vitamin-B12
4. vitamin-K
Which one of the following statement is true regarding digestion and absorption of food in humans?
1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen
2. Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+
3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
4. About 60% of starch is hydrolysed by salivary amylase in our mouth
A certain person eats boiled potato; one of the food component in it is
1. lactose which is indigestible
2. starch which does not get digested
3. cellulose which is digested by intestinal cellulose
4. DNA which gets digested by pancreatic DNAase
The layer of cells that secrete enamel of tooth is:
1. dentoblast
2. ameloblast
3. osteoblast
4. odontoblast
Gastric secretion is stimulated by all except
1. Secretin
2. Gastric distension
3. Gastrin
4. Vagal stimulus
A mass peristaltic movement is responsible for:-
1. Release of bile and pancreatic juice into the duodenum
2. Passage of chyme from stomach to duodenum
3. Vomiting
4. Defecation
The enzymes that is not present in succus entericus is
1. maltase
2. nucleases
3. nucleosidase
4. lipase
Which of the following enzymes carries out the initial step in the digestion of milk in humans?
1. Rennin
2. Lipase
3. Trypsin
4. Pepsin
Which one of the following statement is false regarding digestion and absorption of food in humans?
1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
2. Glucose and amino acids are absorbed with the help of carrier ions like Na+.
3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
4. About 30% of starch is hydrolysed by salivary amylase in our mouth.
During digestion, before the action of lipase, fat is emulsified by:-
1. ergosterols
2. phospholipids
3. lipoproteins
4. digitonin
Sea fish are good source of
1. iron
2. iodine
3. potassium
4. all the above
Which of the following teeth are lophodont?
1. Incisor and canine
2. Canine and premolar
3. Premolar and molar
4. Premolar and incisor
In adults, curdling of the milk in small intestine occurs due to the action of
1. renin
2. erypsine
3. trypsin
4. chymotrypsin
Excessive stimulation of vagus nerve in humans may lead to:
1. hoarse voice
2. peptic ulcers
3. efficient digestion of proteins
4. irregular contractions of diaphragm
Wharton's duct is the duct of
1. submandibular salivary gland
2. parotid gland
3. sublingual gland
4. all of these
Wernickes syndrome is generally common in alcoholic person; which is characterised by less mental activity and dual vision. It is caused by the deficiency of
1. riboflavin
2. pyridoxine
3. thiamine
4. retinol
Assertion : Rumen of alimentary canal of ruminant animals harbour numerous bacteria and protozoa.
Reason : Bacteria and protozoa help in the secretion of gastric juice in the rumen.
Assertion : Carbohydrates are more suitable for the production of energy in the body than proteins and fats.
Reason : Carbohydrates can be stored in the tissues as glycogen for use in the production of energy, whenever necessary.
1. Both A & R are true and the R is the correct explanation of the A.
2. Both A & R are true but the R is not the correct explanation of the A.
3. A is true statement but R is false.
4. Both A and R are false statements.
Which of the following is correct with respect to stomach?
1. Upper left portion of thoracic cavity is location
2. Has only three major parts: Cardiac, fundic and plyoric
3. The main central region is cardiac.
4. Pyloric opens into first part of small intestine.
Find the incorrect match.
1. Large intestine:3 parts
2. Colon: 3 parts
3. Small intestine: 3 parts
4. Stomach: 4 parts
Which of the following is not correct with respect to histology of alimentary canal?
1. There will be four layers from oesophagus to large intestine and rest all parts have absence of one other layer.
2. The order of layer from inside to outside: Mucosa-Submucosa-Muscularis-Serosa.
3. Serosa is made up of epithelium of visceral organs known as mesothelium.
4. Mesothelium has some amount of connective tissue.
The path of bile cannot be-
1. Hepatic cells-hepatic ducts-gall bladder-cystic duct
2. Gall bladder-cystic duct-common bile duct-Pancreas
3. Hepatic cells-cystic duct-Hepatic duct-common bile duct
4. More than one options are wrong
Absorption is the process-
1. By which end products of digestion pass through lumen to intestinal Mucosa
2. By which end product of digestion pass through intestinal Mucosa into the circulatory fluids of body
3. By which water and essential nutrients are taken from alimentary canal to lymph
4. More than one option is correct
What is incorrect with respect to fat absorption where name of cell/organ/fluid is the place where the form of fat is transported?
1. Fatty acids-lumen of intestine
2. Micelle-Intestinal Mucosa
3. Chylomicrons-intestinal Mucosa
4. More than one option
Defaecation is not
1. Voluntary process
2. Carried out by mass-peristaltic movement
3. Initiated by local reflex
4. All the options are wrong with respect to question
In jaundice - what is not observed?
1. Liver is affected
2. Skin and eyes turn yellow because of deposition of bile salts
3. Spreads due to contaminated water
4. More than one option is correct
Fats under the skin, Extensive oedema and swelling of body parts. These are related to
1. Marasmus
2. Kwashiorkor
3. Both
4. Protima
In 1 Kcal, the parameters are
1. Change in temperature is 1 degree
Celsius but water is 100g
2. Change in temperature is 1000 degree
Celsius but water is 1g
3. Change in temperature is 1 degree
Celsius but water is 1g
4. Change in temperature is 1 degree
Celsius but water is 1000g
Which of the following is the physiologic calorific value of carbohydrates and proteins (kCal/g)?
1. 4.1
2. 4.0
3. 5.65
4. 9.45