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Quiz 17
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Q.1
Enzyme which does not directly act upon food substrate is ....[K.C.E.T 1997 ]
0%
a) Trypsin
0%
b) Lopase
0%
c) Enterokinase
0%
d) Amylopsin
Explanation
Enterokinase : a duodenal enzyme that converts trypsinogen to trypsin Answer : (c)
Q.2
Gall bladder is attached to liver in the region of ...[Pb PMT 1995 ]
0%
a) Quadrate lobe
0%
b) Caudate lobe
0%
c) Right lobe proper
0%
d) Left lobe
Explanation
The quadrate lobe is an area of the liver situated on the under surface of the medial segment left lobe , bounded in front by the anterior margin of the liver; behind by the porta hepatis; on the right, by the fossa for the gall-bladder; and on the left, by the fossa for the umbilical vein. Answer : (a)
Q.3
Jaundice is a disease of ... [ CBSE 2010 ]
0%
a) Kidney
0%
b) Liver/Digestive system
0%
c) Pancreas
0%
d) Duodenum
Explanation
Hepatocellular jaundice occurs as a result of liver disease or injury. Bilirubin is a yellow pigment that is formed by the breakdown of dead red blood cells in the liver. Normally, the liver gets rid of bilirubin along with old red blood cells. Answer : (b)
Q.4
Which disease does not occur in infants younger than six months? [ RPMT 1996 ]
0%
a) Kwashiorkor
0%
b) Kwashiorkor and marasmus
0%
c) Marasmus
0%
d) Jaundice
Explanation
Kwashiorkor, also called protein malnutrition, condition caused by severe protein deficiency. It is common in young children weaned to a diet consisting chiefly of cereal grains, cassava, plantain, and sweet potato or similar starchy foods. Infants are feed on mother milk which is rich in protein Answer : (a)
Q.5
Following are vitamins in column I and deficiency diseases in column II
Column I
Column II
(i) K
(a) Beri-beri
(ii) D
(b) Haemorrhagic diseases of new born
(iii) B
1
(c) Night blindness
(iv) A
(d) Rickets
0%
a) (i) - (c); (ii) - (b); (iii) - (d); (iv) - (a)
0%
b) (i) - (a); (ii) - (b); (iii) - (d); (iv) - (c)
0%
c) (i) - (b); (ii) - (d); (iii) - (a); (iv) - (c)
0%
d) (i) - (c); (ii) - (d); (iii) - (a); (iv) - (b)
Explanation
Vitamin K plays a key role in blood clotting, deficiency causes Haemorrhagic diseases of new born (i) - (b) vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities (ii) - (d) Beriberi is a disease caused by a vitamin B-1 deficiency, also known as thiamine deficiency.(iii) - (a) Vitamin A has a major role in phototransduction deficiency causes Night blindness.(iv) - (c) Answer : (c)
Q.6
Calciferol is vitamin ..[RPMT 1996 ]
0%
a) A
0%
b) B
0%
c) C
0%
d) D
Explanation
Calciferol is vitamin D Answer : (d)
Q.7
An animal without gall bladder is ...[ Har. PMT 2002 ]
0%
a) Horse
0%
b) Cat
0%
c) Dog
0%
d) Human
Explanation
All members of the deer family except for the musk deer, all of the equine family (Horse family including zebras), camels, giraffes, elephants, rhinoceroses, whales, some birds (such as doves), rats and some fish do not have gallbladders. Answer : (a)
Q.8
What is true of vitamin C ...[CPMT 2007 ]
0%
a) It is ascorbic acid
0%
b) It is obtained from citrus fruit
0%
c) It is fumaric acid
0%
d) Both A and B
Explanation
Vitamin C, also known as ascorbic acid Oranges contain 53 mg of vitamin C per 100 grams. One medium orange delivers 70 mg of vitamin C. Other citrus fruits, such as grapefruit, mandarins and limes, are also good sources of this vitamin Answer : (d)
Q.9
Which one is correctly matched? [ AIIMS 2006]
0%
a) Oxyntic cell - a secretion with pH between 2.0 -3.0
0%
b) Alpha cells of islets of Langerhans - Secretion that decrease blood sugar level
0%
c) Kupffer cells - digestive enzyme that hydrolyses nucleic acid
0%
d) Sebaceous glands - secretion that evaporates for cooling
Explanation
Alpha cells of islets of Langerhans secrete the peptide hormone glucagon, which elevates the glucose levels in the blood. Option a wrong Oxyntic cells secrete HCl option b correct Kupffer cells digests cellular debris, foreign substances, microbes, cancer cells, and anything else that does not have the types of proteins specific to healthy body cells on its surface Option c wrong Sebaceous glands are microscopic exocrine glands in the skin that secrete an oily or waxy matter, called sebum, to lubricate and waterproof the skin and hair of mammals. Option d wrong Answer : (a)
Q.10
Cod liver oil is source of ... [ Manipal 1995 ]
0%
a) Vitamin B
0%
b) Vitamin C
0%
c) Vitamin A
0%
d) Iodine
Explanation
Cod liver oil contains relatively high amounts of vitamin A and vitamin D. Answer : (c)
Q.11
Deficiency of which causes loss of appetite, mental confusion, fatigue and muscle depreciation....[ Guj. CET 2007 ]
0%
a) Riboflavin
0%
b) Vitamin C
0%
c) Vitamin K
0%
d) Thiamine
Explanation
Symptoms of thiamine deficiency, or a lack of vitamin B1, include fatigue, irritability, depression and stomach problems. Symptoms of riboflavin deficiency include: swelling and fissuring of the lips (cheilosis). ulceration and cracking of the angles of the mouth (angular stomatitisis). oily, scaly skin rashes on the scrotum, vulva, or area between the nose and lips. inflammation of the tongue. red, itchy eyes that are sensitive to light. Symptoms of Vitamin C deficiency include: Rapid mood changes, short tempers, and irritability can be an early sign of scurvy Symptoms of vitamin K deficiency include: heavy menstrual bleeding, gum bleeding, nose bleeding, and easy bruising,bleeding within the digestive tract and blood in the urine. Answer : (d)
Q.12
Wisdom teeth are ...[AFMC 2005 ]
0%
a) Last premolars
0%
b) Last molars
0%
c) Incisors
0%
d) Canines
Explanation
Wisdom teeth are the last molars third and final set of molars that most people get in their late teens or early twenties. Answer : (b)
Q.13
Weak peristaltic wave pass along stomach wall every .... [ Tamil Nadu 2001 ]
0%
a) 20 seconds
0%
b) 30 seconds
0%
c) 15 seconds
0%
d) 10 seconds
Explanation
Waves of muscular contraction move along its wall from one end to the other, waves pass every 20 seconds mixing food in stomach acid Answer : (a)
Q.14
Match the column and find the correct options
Column I
Column II
a) Sphincter of aniinterus
p) Opening of hepatopancreatic duct into duodenum
b) Cardiac sphincter
q) Between duodenum and posterior stomach
c) Spincter of Oddi
r) Guarding of terminal part of alimentary canal
d) Ileocaecal sphincter
s) Between oesophagus and anterior stomach
e) Pyloric sphincter
t) Between small intestine and bowel
0%
a) a - q ; b - r; c - t; d - p; e - s
0%
b) a - r ; b - t; c - s; d - p; e - s
0%
c) a - r ; b - q; c - p; d - t; e - q
0%
d) a - q ; b - t; c - t; d - p; e - s
Explanation
The hepatopancreatic duct also known as ampulla of Vater or the hepatopancreatic ampulla , is formed by the union of the pancreatic duct and the common bile duct. The sphincter of Oddi (SO) is critically located at the junction of the common bile duct (CBD), main pancreatic duct (hepatopancreatic duct) , and the duodenum c - p Sphincter ani internus (Internal sphincter ani) is a muscular ring which surrounds about 2.5 cm. of the anal canal; a - r cardiac sphincter, at the upper portion (cardia) of the stomach b-q Sphincter of Oddi guards the opening of the hepatopancreatic duct into the duodenum.c-p The ileocecal valve is a sphincter muscle valve that separates the small intestine and the large intestine d-t The pyloric sphincter is a band of smooth muscle at the junction between the pylorus of the stomach and the duodenum of the small intestine e-q Answer : (c)
Q.15
HCl present in gastric juice changes....[ EAMCET 1999 ]
0%
a) Pepsinogen to pepsin
0%
b) Pro-rennin to rennin
0%
c) Disaccharides to monosaccharides
0%
d) All the above
Explanation
I) HCl converts the inactive enzyme pepsinogen into the active enzyme pepsin. II) Hydrochloric acid in the gastric juice present in the stomach activates prorennin, and converts it into its active form, rennin. II)Hydrochloric acid hydrolysis of polysaccharides and oligosaccharides yields simpler monosaccharides sugars SOLUTION Answer : (d)
Q.16
Prorennin is produced by .... [ DPMT 2007 ]
0%
a) juxtaglomerular cells
0%
b) Zymogen cells
0%
c) Sertoli cells
0%
d) Hepatocytes
Explanation
The juxtaglomerular cells (JG cells, or granular cells) are cells in the kidney that synthesize, store, and secrete the enzyme renin. Rennin is produced in the form of inactive prorennin. synthesized by chief cells in the stomach. The gastric chief cell also known as a zymogenic cell or peptic cell Option b correct Sertoli cells to secrete androgen-binding protein into the lumen of the seminiferous tubules. Hepatocytes make up 70-85% of the liver's mass. These cells are involved in: Protein synthesis. Answer : (b)
Q.17
Auerbach's plexus occurs ... [ JIPMER 2003 ]
0%
a) Amongst podocytes of Bowman's capsule
0%
b) Inner to muscular interna
0%
c) In muscular externa and made of nerves
0%
d) Below dermis and made of muscles
Explanation
A part of the enteric nervous system, the Auerbach's plexus (myenteric plexus) exists between the longitudinal and circular layers of muscularis externa in the gastrointestinal tract Answer : (c)
Q.18
Pepsin is secreted by ....[CPMT 1997 ]
0%
a) Paneth cells
0%
b) Zymogen cells of stomach
0%
c) Zymogen cells of duodenum
0%
d) Pancreas
Explanation
Gastric zymogenic cell is a type of cell in the stomach that releases pepsinogen and gastric lipase Answer : (b)
Q.19
Partially digested semisolid food formed in stomach is .....
0%
a) Chyle
0%
b) Chyme
0%
c) Bolus
0%
d) Chylomicron
Explanation
Chyme or chymus is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum Answer : (b)
Q.20
Deficiency of B12 causes ...[MPPMT 2009 ]
0%
a) Thalassaemia
0%
b) Beri-beri
0%
c) Pernicious anaemia
0%
d) Cheilosis
Explanation
Pernicious anaemia : Vitamin B12 deficiency anemia, of which pernicious anemia is a type, is a disease in which not enough red blood cells are present due to a lack of vitamin B12. Answer : (c)
Q.21
One of the following movements is not completely involuntary. it is ...[KCET 2012]
0%
a) Peristalsis
0%
b) Systole ventricles
0%
c) Dialation of eye pupil
0%
d) Deglutition
Explanation
Deglutition : the action or process of swallowing. Answer : (d)
Q.22
Vomiting is related to disturbance in ...[ DPMT 2009 ]
0%
a) Stomach sometimes duodenum
0%
b) Hypothalamus
0%
c) Gastrointestinal tract
0%
d) Hapothalamus
Explanation
Vomiting is the forceful expulsion of contents of the stomach and often, the proximal small intestine. Answer : (a)
Q.23
Vitamin D discovered by ... [ Kerala 2000 ]
0%
a) Mellanby
0%
b) Funk
0%
c) Buchner
0%
d) Jenner
Explanation
Sir Edward Mellanby in Great Britain discovered Vitamin D Answer : (a)
Q.24
Which one is correctly matched? [ Kerala 2006 ]
0%
a) Vitamin E - Thiamine
0%
b) Vitamin D - Riboflavin
0%
c) B12 - Cyanocobalamine
0%
d) Vitamin A - Calciferol
Explanation
Cyanocobalamin is a synthetic form of vitamin B12 Calciferol is vitamin D Answer : (c)
Q.25
Fat soluble vitamin and its related deficiency disease is ...[CBSE 2007 ]
0%
a) Retinol - Xerophtalmia
0%
b) Cobalamine - Beri-beri
0%
c) Ascorbic acid - Scurvy
0%
d) Calciferol - pellagra
Explanation
Xerophthalmia is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency. Retinol, also known as Vitamin A1 is a fat soluble vitamin. Answer : (a)
Q.26
Bilirubin is formed by breakdown product of ....[MHTCET 2011 ]
0%
a) Haemoglobin
0%
b) Haemocyanin
0%
c) Haemopoietin
0%
d) Haematin
Explanation
Bilirubin, a brownish yellow pigment of bile, secreted by the liver in vertebrates, which gives to solid waste products (feces) their characteristic colour. It is produced in bone marrow cells and in the liver as the end product of red-blood-cell (hemoglobin) breakdown. Answer : (a)
Q.27
Bile secreted by liver passes into gall bladder through...[ BHU 1999 ]
0%
a) Hepatopancreatic duct
0%
b) Hepatic duct
0%
c) Cystic duct
0%
d) Hepato-gall duct
Explanation
The gallbladder acts as a storage vessel for bile produced by the liver. Bile is produced by hepatocytes cells in the liver and passes through the bile ducts to the cystic duct. From the cystic duct, bile is pushed into the gallbladder by peristalsis Answer : (c)
Q.28
Vitamin D is synthesised in skin by the action of sunlight on ....[BHU 2006]
0%
a) Cholesterol
0%
b) 7-hydroxy cholesterol
0%
c) Cephalo-cholesterol
0%
d) All the above
Explanation
When sunshine in the UV-B spectrum strikes the skin, it converts a substance in the skin called 7-dehydrocholesterol into vitamin D3 Answer : (b)
Q.29
Approximately how much large is whole digestive system in a healthy human? [ CET Chd. 2010 ]
0%
a) 3 m
0%
b) 5 m
0%
c) 7 m
0%
d) 9 m
Explanation
The digestive system -- which can be up to 30 feet (9.144 m) in length in adults -- is usually divided into eight parts: the mouth, the esophagus, the stomach, the small intestine (or "small bowel") and the large intestine (also called "large bowel" or "colon") Answer : (c)
Q.30
Most harmful anaemia is ..[WB2007]
0%
a) Microcytic
0%
b) Macrocytic
0%
c) Pernicious
0%
d) Both A and B
Explanation
The term “pernicious” means “deadly.” The condition is called pernicious anemia because it often was fatal in the past, before vitamin B12 treatments were available. Pernicious anemia is a condition in which the body can't make enough healthy red blood cells because it doesn't have enough vitamin B12. Answer : (c)
Q.31
In jejunum, enzyme required for digestion of amino acid containing compounds is ...[ Guj CET 2009 ]
0%
a) Trypsin
0%
b) Pepsin
0%
c) Peptidase
0%
d) Chymotrypsin
Explanation
Peptidase, also called protease or proteinase,an enzyme which breaks down peptides into amino acids. It is a type of enzyme that helps to break down proteins in the body. Answer : (c)
Q.32
Common ingredients in secretion of salivary and Brunner's glands having role in growth repair and regeneration is ... [ AMU 2009 ]
0%
a) Neurotensin
0%
b) Somatostatin
0%
c) Urogastrone
0%
d) Enterogastrone
Explanation
Gamma Urogastrone. Human epidermal growth factor (EGF) is a polypeptide growth hormone that plays an important role in the regulation of growth, proliferation, and differentiation of a wide range of cells by binding to EGF receptors. Urogastrone secreted by the submandibular salivary glands, duodenal Brunner's glands, small intestinal Paneth cells, and other exocrine glands including the pancreas Answer : (c)
Q.33
Thecodont, diphyodont and heterodont teeth are characteristic of ... [ Bih PMT 2002 ]
0%
a) Reptiles
0%
b) Aves
0%
c) Mammals/ man
0%
d) Amphibians
Explanation
human teeth have all of these characteristic that’s why their dentition refers to as thecodont, heterodont and diphyodont. Thecodont dentition is an arrangement in which the base of the tooth is completely enclosed in a deep socket of bone is the characteristic of mammalian teeth as seen in humans Diphyodont dentition is a characteristic of mammals in which milk teeth appear in the young ones but as they grow and jaw becomes larger, milk teeth are replaced by larger permanent ones to fit in the larger jaw bone. Heterodont dentition occurs in mammals in which there are 4 functionally different types of teeth, namely, flat incisors for cutting, long and pointed canines for tearing flesh and large and broad premolars and molars with flat grinding surface. Answer : (c)
Q.34
It is not a function of liver ..[ DPMT 2008 ]
0%
a) Production of bile
0%
b) Glycogen storage
0%
c) Production of insulin
0%
d) Detoxification
Explanation
Insulin is produced in the pancreas and the Brockmann body (in some fish), and released when any of several stimuli are detected. Answer : (c)
Q.35
Contraction of muscle and contraction of nerve require .... [ BHU 1997 ]
0%
a) Na+ and K+
0%
b) K+ and Mg2+
0%
c) Ca2+
0%
d) Ca2+ and K+
Explanation
A cross-bridge forms between actin and the myosin heads triggering contraction. As long as Ca++ ions remain in the sarcoplasm to bind to troponin, and as long as ATP is available, the muscle fiber will continue to shorten. Relaxation of a Muscle Fiber: Ca++ ions are pumped back into the SR, which causes the tropomyosin to reshield the binding sites on the actin strands. A muscle may also stop contracting when it runs out of ATP and becomes fatigued. Answer : (c)
Q.36
Crown of teeth is covered by ....[AFMC 2005 ]
0%
a) Cementum
0%
b) Dentine
0%
c) Enamel
0%
d) Both B and C
Explanation
crown refers to the anatomical area of teeth, usually covered by enamel. Enamel is the hardest substance in vertebrate body. It is ectodermal in origin and produced by ameloblasts Answer : (c)
Q.37
Amount of bilirubin in icterus/jaundice would be ...[ Manipal 2002 ]
0%
a) 20 ml/L
0%
b) 0.2 mg/L
0%
c) 1-2 mg/L
0%
d) 2-3 mg/L
Explanation
Levels of bilirubin in blood are normally below 1.0 mg/dL (17 µmol/L) and levels over 2–3 mg/dL (34-51 µmol/L) typically results in jaundice Answer : (d)
Q.38
match the columns .... (Guj CET 2008 )
a) Retinol
i) Inhibits oxidation of unsaturated fatty acids
b) Tocopherol
ii) Absorption of ca
2+
c) Calciferol
iii) Essential for maintenance of epithelial tissue
d) Menadione
iv) Helps in clotting of blood
e) Ascorbic acid
v) Required for amino acid metabolism
0%
a) a - iii; b - i; c - ii; d - iv; e - v
0%
b) a - iii; b - ii; c - iv; d - v; e - i
0%
c) a - iv; b - i; c - ii; d - iii; e - v
0%
d) a - ii; b - iii; c - i; d - iv; e - v
Explanation
Retinol (Vitamin A) is required for growth and reproduction of the skin, and differentiation of epithelial tissue. a- iii Tocopherol Inhibits oxidation of unsaturated fatty acids b-i Vitamin D (calciferol), which comprises a group of fat soluble seco-sterols that are found in very few foods naturally, is photosynthesized in the skin of vertebrates, helps in absorption of Ca2+ c-ii Menadione promotes the hepatic biosynthesis of blood clotting factors. d-iv Ascorbic acid is involved in the metabolism of several amino acids, leading to the formation of hydroxyproline, hydroxylysine, norepinephrine, serotonin, homogenistic acid, and carnitine e-v Answer : (a)
Q.39
Normal functioning of sex glands is regulated by ...[Pb. PMT 2007 ]
0%
a) Tocopherol
0%
b) Calciferol
0%
c) Phylloquinone
0%
d) Pyridoxine
Explanation
The gonads are bifunctional organs that produce germ cells and the sex hormones. Their functions are controlled by tocopherol (vitamin E), which is essential for proper spermatogenesis, pregnancy, and lactation. Tocopherol is also responsible for proper muscular function. Answer : (a)
Q.40
Digestive enzyme not found in humanp pancreatic juice is ...[kerala 2006 ]
0%
a) Nuclease
0%
b) Nucleotidase
0%
c) Trypsin
0%
d) lipase
Explanation
Enzymes secreted by the intestinal cells include intestinal lipase, amino peptidase, dipeptidase, nucleotidase, nucleosidase, and enterokinase. Answer : (b)
Q.41
Which is different? [ BHU 1999 ]
0%
a) Gastrin
0%
b) Secretin
0%
c) Ptyalin
0%
d) Glucagon
Explanation
Ptyalin enzyme is an amylase enzyme produced by the salivary glands While Glucagon is a peptide hormone, produced by alpha cells of the pancreas. Gastrin is a hormone produced by the stomach, Secretina hormone released into the bloodstream by the duodenum (especially in response to acidity) to stimulate secretion by the liver and pancreas Answer : (c)
Q.42
Back flow of faecal matter from large intestine is prevented by ...[kerala 2011 ]
0%
a) Epiglottis
0%
b) Sphincter of Oddi
0%
c) Ileocecal valve
0%
d) Pyloric sphincter
Explanation
The function of the Ileocecal valve is to prevent the waste material in the large intestine from refluxing back into the ileum. Answer : (c)
Q.43
Stool of an infant feeding entirely on whitish mother's milk is yellow due to ...[CBSE 2009 ]
0%
a) Intestinal juice
0%
b) pancreatic juice
0%
c) Bile pigments
0%
d) Undigested milk casein
Explanation
Stool of an infant feeding entirely on whitish mother's milk is yellow due to Bile pigments Answer : (c)
Q.44
A person suffering from deficiency of visual pigment rhodopsin is advised to take ...
0%
a) Guava and ripe Banana
0%
b) Radish and Potato
0%
c) Apple and Grapes
0%
d) Carrot and ripe Papaya
Explanation
Rhodopsin is pigmented molecule derived from vitamin A. Carrot and ripe Papaya are source of vitamin A Answer : (d)
Q.45
In mammals a significant initial role in the digestion of milk is played by ....[ AFMC 2007 ]
0%
a) Amylase
0%
b) Intestinal bacteria
0%
c) Rennin
0%
d) Invertase
Explanation
Chymosin, known also as rennin, is a proteolytic enzyme related to pepsin that synthesized by chief cells in the stomach of some animals. Its role in digestion is to curdle or coagulate milk in the stomach, a process of considerable importance in the very young animal. Answer : (c)
Q.46
Peptic cells secrete ...[Pb PMT 2007]
0%
a) HCl
0%
b) Gastrin
0%
c) Cholecystokinin
0%
d) Pepsinogen
Explanation
The gastric chief cell (also known as a zymogenic cell or peptic cell) is a cell in the stomach that releases pepsinogen and chymosin. Answer : (d)
Q.47
Stomach of Camel is devoid of ... [ Kerala 2000 ]
0%
a) Rumen
0%
b) Abomasum
0%
c) Reticulum
0%
d) Omasum
Explanation
The omasum, also known as the bible, the fardel, the manyplies and the psalterium, is the third compartment of the stomach in ruminants. Answer : (d)
Q.48
Vitamin nicotinamide can be synthesised in our body from ...[AIIMS 2002 ]
0%
a) Tyrosine
0%
b) Tryptophan
0%
c) Valine
0%
d) Phenylalanine
Explanation
The vitamin nicotinamide is synthesized in the liver from tryptophan, Answer : (b)
Q.49
Which one is an antioxidant .... [ Pb PMT 2007 ]
0%
a) Vitamin B
0%
b) Vitamin C
0%
c) Vitamin K and iron
0%
d) Vitamin E, C and A
Explanation
Vitamin E, C and A are antioxidant Answer : (d)
Q.50
Diastema is associated with ....[Har. PMT 2007 ]
0%
a) Organ of Corti
0%
b) Absence of certain teeth
0%
c) Retinal cells
0%
d) Presence of teeth
Explanation
Diastema is associated with absence of certain teeth A diastema (plural diastemata) is a space or gap between two teeth. Many species of mammals have diastemata as a normal feature, most commonly between the incisors and molars. Answer : (b)
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