MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following situations will lead to increase viscosity of blood - |
| A. | Hypoglycemia |
| B. | Fasting state |
| C. | Amyloidogenesis |
| D. | Multiple myeloma |
| Answer» E. | |
| 2. |
True statement about golgi tendon organ is - |
| A. | Detects length change |
| B. | 3-25 muscle fibers |
| C. | High threshold |
| D. | Dynamic response only |
| Answer» C. High threshold | |
| 3. |
Which of the following statements about myocardial oxygen demand is true |
| A. | Is negligible when heart is at rest |
| B. | Depends upon duration of systole |
| C. | Correlates with heart rate |
| D. | Is directly proportional to external cardiac work |
| Answer» D. Is directly proportional to external cardiac work | |
| 4. |
Excitatory Neurotransmitters are - |
| A. | GABA |
| B. | Glutamine |
| C. | Acetyl choline |
| D. | Glycine |
| Answer» C. Acetyl choline | |
| 5. |
About paradoxical sleep. true is - |
| A. | Prominent beta waves |
| B. | Prominent alpha waves |
| C. | Also known as NREM sleep |
| D. | Low amplitude, mixed frequency waves |
| Answer» E. | |
| 6. |
Which of the following is not an enzyme of Urea biosynthesis ? |
| A. | Carbamyl phosphate synthase II |
| B. | Ornithine transcarbamylase |
| C. | Argininosuccinase |
| D. | Arginase |
| Answer» B. Ornithine transcarbamylase | |
| 7. |
The term 'Mileu interior' was given by ? |
| A. | Knut Schmidt-Nielsen |
| B. | George Bartholomew |
| C. | Claude Bernard |
| D. | Walter Cannon |
| Answer» D. Walter Cannon | |
| 8. |
Alpha-wave in EEG is seen in - |
| A. | Mental work |
| B. | Sleep |
| C. | REM sleep |
| D. | Awake state |
| Answer» E. | |
| 9. |
Regarding presynaptic inhibition which of the following combination is true- a) Affected by axo-axonic transmission. b) Not affected by pharmacologic agent c) prolonged by anaesthetic agents d) not prolonged by strychnine e) Inhibited by picrotoxin f) it will increase EPSP |
| A. | a,c and f are true. |
| B. | a,d,e are true |
| C. | d,c and b are true |
| D. | a,d and b are true |
| Answer» C. d,c and b are true | |
| 10. |
Blood groups A1 and A2 are differentiated on the basis of: |
| A. | Antigenic structure |
| B. | Configuration of antigen |
| C. | No of antigenic sites on RBC |
| D. | Structure of hemoglobin |
| Answer» D. Structure of hemoglobin | |
| 11. |
MIS is secreted by ? |
| A. | Sertoli cells |
| B. | Leidig cells |
| C. | Supporting cells |
| D. | Semeniferous tubules |
| Answer» B. Leidig cells | |
| 12. |
Which among the following is a feature of denervation of smooth muscle ? |
| A. | Atrophy of the muscle |
| B. | Decrease in no of receptors for neurotransmitters |
| C. | Increased sensitivity to chemical mediators |
| D. | Decreased neurotransmitter release at NMJ |
| Answer» D. Decreased neurotransmitter release at NMJ | |
| 13. |
Which of the following conditions lead to tissue hypoxia without alteration of oxygen content of blood ? |
| A. | CO poisoning |
| B. | Met Hb |
| C. | Cyanide poisoning |
| D. | Respirator acidosis |
| Answer» D. Respirator acidosis | |
| 14. |
Which of the following organs secretes zinc in large amount in man ? |
| A. | Prostate |
| B. | Seminal vesicle |
| C. | Vas |
| D. | Epididymis |
| Answer» B. Seminal vesicle | |
| 15. |
Viscosity of synovial fluid depends upon - |
| A. | Glucuronic acid |
| B. | Hyaluronic acid |
| C. | N-acetyl galactosamine |
| D. | N-acetyl glucosamine |
| Answer» C. N-acetyl galactosamine | |
| 16. |
In presynaptic inhibition - |
| A. | The amplitude of EPSP produced will be decreased in the synapse due to the activity neuron |
| B. | The presynaptic effect will increase the amount of neurofransmitter released |
| C. | An axosomatic synapse is essential |
| D. | An IPSP is produced at the main synapse |
| Answer» B. The presynaptic effect will increase the amount of neurofransmitter released | |
| 17. |
Substance involved in countercurrent mechanism for maintaining medullary gradient - |
| A. | NaCi, urea |
| B. | NaCl, urea, water |
| C. | NaCl |
| D. | Urea |
| Answer» C. NaCl | |
| 18. |
During Flight or Fight reaction,which of the following is responsible for increase in local blood flow: |
| A. | Para-sympathetic cholinergic |
| B. | Endocrine factors only |
| C. | Sympathetic system mediated Cholinergic release |
| D. | Local hormones |
| Answer» D. Local hormones | |
| 19. |
True regarding autonomic system is: |
| A. | High centre of integration is medulla oblongata |
| B. | Conduction autonomic fibres is same as in somatic motor fibres |
| C. | Preganglionic parasympathetic fibres are more lenghty |
| D. | Ratio of pregnanglionic and post ganglionic fibres is 20:1 |
| Answer» D. Ratio of pregnanglionic and post ganglionic fibres is 20:1 | |
| 20. |
HCL secretion is stimulated by - |
| A. | Somatostatin |
| B. | Secretin |
| C. | VIP |
| D. | Histamine |
| Answer» E. | |
| 21. |
A2 occurs earlier than P2 because: |
| A. | Pulmonary impedence is low |
| B. | Pulmonary artery is larger |
| C. | Pulmonary capacitance is low |
| D. | Low systemic resistance |
| Answer» B. Pulmonary artery is larger | |
| 22. |
The sperms become motile in - |
| A. | Epididymis |
| B. | Vas deference |
| C. | Prostatic urethra |
| D. | Testis |
| Answer» B. Vas deference | |
| 23. |
Memory cell in immune system are long lived and escape apoptosis because of - |
| A. | Platelet derived growth the factor |
| B. | Nerve growth factor |
| C. | Insulin like growth factor |
| D. | Fibroblast growth factor |
| Answer» C. Insulin like growth factor | |
| 24. |
Intracellular sorting and packing done for - |
| A. | Golgi apparatus |
| B. | ER |
| C. | Cytoplasm |
| D. | Ribosome |
| Answer» B. ER | |
| 25. |
A pilot in Sukhol aircraft is experiencing negative G.Which of the following physiological events will manifest in such situation? |
| A. | Black out occurs |
| B. | The cerebral arterial pressure rises |
| C. | The hydrostatic pressure in veins of lower limb increases |
| D. | The cardiac output decreases |
| Answer» C. The hydrostatic pressure in veins of lower limb increases | |
| 26. |
The correct sequence of cell cycle is - |
| A. | G0-M-G2-S-G1 |
| B. | G0-G1-S-M-G2 |
| C. | G0-G1-S-G2-M |
| D. | G0-G1-G2-S-M |
| Answer» D. G0-G1-G2-S-M | |
| 27. |
Which of the following adaptations will be apt to increase the work capacity at high altitudes: |
| A. | Increasing workload,decreasing duration of exercise |
| B. | Increasing workload,increasing duration of exercise |
| C. | Decreasing workload,increasing duration of exercise |
| D. | Decreasing workload,decreasing duration of exercise |
| Answer» D. Decreasing workload,decreasing duration of exercise | |
| 28. |
Which of the following is not a cell adaptation: |
| A. | Hypertrophy |
| B. | Hyperplasia |
| C. | Dysplasia |
| D. | Metaplasia |
| Answer» D. Metaplasia | |
| 29. |
The only sugars normaly absorbed in the intestine against a concentration gradient is - |
| A. | Mannose |
| B. | Xylose |
| C. | Ribose |
| D. | Glucose |
| Answer» E. | |
| 30. |
Antibodies against sperms may develop after - |
| A. | Infection |
| B. | Truma |
| C. | Orchidectomy |
| D. | Vasectomy |
| Answer» E. | |
| 31. |
Renin secretion is inhibited by - |
| A. | Increased sympathetic activity via renewal nerves |
| B. | Increased circulating catecholamines |
| C. | Increased afferent arteriolar pressure |
| D. | Prostaglandins |
| Answer» D. Prostaglandins | |
| 32. |
Least conduction velocity is seen in - |
| A. | Bundle of his |
| B. | Ventricular myocardial fibres |
| C. | AV node |
| D. | Purkinje fibres |
| Answer» D. Purkinje fibres | |
| 33. |
The sigmoid nature of Hb-O2 dissociation curve is because of: |
| A. | Binding of one O2 molecule increase the affinity for the next O2 molecule |
| B. | Alpha chain has more affinity for O2 than beta chain |
| C. | Beta chain has more affinity for O2 than alpha chain |
| D. | Haemoglobin in acidic in nature |
| Answer» B. Alpha chain has more affinity for O2 than beta chain | |
| 34. |
Which of the following is not involved in intrinsic pathway? |
| A. | Factor IX |
| B. | Factor VII |
| C. | Factor XII |
| D. | Factor XI |
| Answer» C. Factor XII | |
| 35. |
A man given continuous testosterone. It would lead to: |
| A. | iccreased spermatogenesis |
| B. | iccreased gonadotrophins |
| C. | azoospermia |
| D. | increased sperm motility |
| Answer» D. increased sperm motility | |
| 36. |
Helper and cytotoxic cells belong to |
| A. | VII |
| B. | X |
| C. | VIII |
| D. | II |
| Answer» D. II | |
| 37. |
Mitral orifice area is - |
| A. | 4-6 sq.cm |
| B. | 2-4 sq.cm |
| C. | 1-2 sq.cm |
| D. | 0.5-1 sq.cm |
| Answer» B. 2-4 sq.cm | |
| 38. |
In anemia, the concentration of 2, 3-DPG is - |
| A. | Increased |
| B. | Decreased |
| C. | Not changed |
| D. | A or B |
| Answer» B. Decreased | |
| 39. |
All of the following factors influence hemoglobin dissociation curve, except - |
| A. | Temperature |
| B. | 2-3 DPG levels |
| C. | Chloride ion concentration |
| D. | CO2 tension |
| Answer» D. CO2 tension | |
| 40. |
Which tract controls the skilled voluntary movements ? |
| A. | Lateral corticospinal tract |
| B. | Tectospinal tract |
| C. | Rubrospinal tract |
| D. | Retriculospinal tract |
| Answer» B. Tectospinal tract | |
| 41. |
Best stimuli for CCK secretin is - |
| A. | Acid |
| B. | Bile |
| C. | Protein |
| D. | Fat |
| Answer» D. Fat | |
| 42. |
Amount of dissolved oxygen transported in 100 ml of plasma in a subject breathing 100% oxygen at 4 ATA (Atmospheric pressure) will be: |
| A. | 3 ml |
| B. | 0.3 ml |
| C. | 9 ml |
| D. | 6 ml |
| Answer» D. 6 ml | |
| 43. |
Inulin Clearance is used to estimate: |
| A. | Measuring GFR |
| B. | Concentrating ability |
| C. | Diluting ability |
| D. | To study the renal morphology |
| Answer» B. Concentrating ability | |
| 44. |
Appetite is stimulated by all except: |
| A. | Melanocyte concentrating hormone |
| B. | Agouti related peptide |
| C. | Neuropeptide Y |
| D. | Melanocyte stimulating hormone |
| Answer» E. | |
| 45. |
Pancreatic secretion contain - |
| A. | pepsin |
| B. | Renin |
| C. | Trypsin |
| D. | Enteropeptidase |
| Answer» D. Enteropeptidase | |
| 46. |
Lipids and proteins interact in membrane by - |
| A. | Covalent bosds |
| B. | Hydrogen bonds |
| C. | Hydrophobic interactions |
| D. | Both hydrophobic and covalent interactions |
| Answer» C. Hydrophobic interactions | |
| 47. |
How would a drug that competes with ACh for receptors at the motor end plate affect skeletal muscle ? It would - |
| A. | Produce uncontrolled muscle spasms |
| B. | Cause the muscle to contract and be unable to relax |
| C. | Cause muscles to relax and be unable to contract |
| D. | Make the muscles more excitable |
| Answer» D. Make the muscles more excitable | |
| 48. |
Under physiological condition heat acclimatization is accomplished A/E - |
| A. | Decreased Renal Blood Flow |
| B. | Increased urine sodium |
| C. | Increased aldosterone secretion |
| D. | Excessive sweating |
| Answer» C. Increased aldosterone secretion | |
| 49. |
Intrapulmonary shunting refers to |
| A. | Anatomical dead space |
| B. | Alveolar dead space |
| C. | Wasted ventilation |
| D. | Perfusion in excess of ventilation |
| Answer» E. | |
| 50. |
In order to minimize oxygen debt,athletes prior to exercise are advised to take: |
| A. | Carbohydrate |
| B. | Protein |
| C. | Fat |
| D. | High calorie diet |
| Answer» B. Protein | |