Sub. Code : 6053
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M.B.B.S. DEGREE EXAMINATION
(For the candidates admitted from the Academic Year 2019-2020)
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FIRST YEAR ? (CBME)
PAPER I ? PHYSIOLOGY
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Q.P. Code: 526053
Time: 30 Minutes
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Maximum : 20 Marks
Answer All Questions
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Choose one correct answer in the box provided in the Answer Script. No overwriting
should be done. Choice should be given in Capital Letters.
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III. Multiple Choice Questions:
(20 x 1 = 20)
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1. Which of the following cellular organelle contain oxidases?
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A) Mitochondria B) Golgi Apparatus C) Lysosomes D) Peroxisomes2. Which of the following cytoskeletal protein serve as conveyor belts for the intracellular
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transport of vesicles and granules?A) Microfilament B) Intermediate filament C) Microtubule D) Desmin filaments
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3. Which control mechanism operates during rapid movements of the body?
A) Positive feedback B) Negative feed back
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C) Vicious Cycle D) Feed-forward control4. Which of the following promotes the rouleaux formation?
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A) Albumin
B) Thrombin
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C) Fibrinogen D) Prothrombin5. Hypersegmented Neutrophils are seen in
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A) Hemolytic anemia B) Iron deficiency anemiaC) Megaloblastic anemia D) Aplastic anemia
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6. A type of white blood cell in the alveoli of lungsA) Littoral cells B) Dust cells
C) Histiocytes D) Kupffer cells
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7. Which of the following drugs would likely alleviate myasthenia gravis patient's symptoms?
A) Atropine B) Cholinesterase C) Curare D) Neostigmine
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8. The calcium-binding protein that plays a key role in the regulation of smooth muscle cell
contraction is
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A) Dystrophin B) Calmodulin C) Troponin C D) Calcineurin9. Which of the following is not true regarding Type I skeletal muscle fibers?
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A) They are slow muscle fibers B) They have high glycolytic capacityC) They contain myoglobin D) There are numerous mitochondria
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10. The proenzyme pepsinogen is secreted mainly from which of the following structures?
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A) Acinar cells of the pancreas B) Ductal cells of the pancreas
C) Epithelial cells of the duodenum D) Gastric glands of the stomach
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11. The following are the functions of bile salts exceptA) Reduce the surface tension
B) Responsible for emulsification of fat
C) Fats are converted into fatty acids and glycerol
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D) Form micelles12. The myenteric plexus of the oesophagus is deficient at the `Lower Esophageal Sphincter'
in which of the following condition ?
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A) Gastro oesophageal reflux disease B) Achalasia cardia
C) Aerophagia D) Hirshsprung's disease
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13. Which is the fundamental mechanism generating hypertonicity in the renal medullary
interstitium?
A) Active transport of NaCl in thick ascending limb
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B) Action of ADH in the collecting ductsC) Passive recirculation of NaCl in the medullary interstitium
D) Urea permeability of collecting ducts
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14. Most important buffer system present in the distal convoluted tubule is
A) Bicarbonate B) Phosphate C) Protein D) Ammonia
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15. Angiotensin II causes all of the following except
A) Stimulation of thirst B) Aldosterone secretion
C) Increased ADH secretion D) Vasodilation
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16. Metabolic syndrome of obesity includes all exceptA) Hyperinsulinemia B) Hyperlipidemia
C) Accelerated atherosclerosis D) Decreased serum insulin levels
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17. The binding of iodine with the thyroglobulin molecule is called
A) Iodide trapping B) Oxidation of the Iodide Ion
C) Organification D) Coupling
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18. Sheehan syndrome is post partum necrosis of
A) Pancreas B) Pineal gland C) Pituitary gland D) Adrenal gland
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19. In females, the first event during puberty is
A) Thelarche B) Pubarche
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C) Menarche
D) Adrenarche
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20. Which of the following inhibits synthesis and secretion of prolactin by lactotropes ?
A) Somatostatin B) Dopamine C) Oestrogen D) Oxytocin.
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*********[MBBS 1123]