1. why fetal cells continue to divide but terminally differentiated adult cells do not divideabsence of CD kinaseproteinase is absent in fetusthere are many cyclin inhibitors which prevent cell from entering into S phase in adultsphosphatase is absent in fetal cellsQuestion 1 of 20 2. not done by insulinlipogenesisglycogen synthesisglycolysisketogenesisQuestion 2 of 20 3. difference between stem cells and progenitor cells isstem cells are only present in bone marrowstem cells can form all hematogenous cell lineages while progenitor cells cannotmeiosis is seen in stem cellsprogenitor cells cant differentiate further while stem cells canQuestion 3 of 20 4. Transport of Carbon monoxide is diffusion limited becauseCO crosses epithelial barrier slowlyHigh affinity of CO for haemoglobinOn exposure to air,there is sudden increase in partial pressureAlveolar membrane is less permeable to COQuestion 4 of 20 5. Hormone responsible for galactopoiesisInsulinOxytocinProlactinGrowth hormoneQuestion 5 of 20 6. Lysosomal enzymes are maximally active athas no relation with pHAcidic pHAlkaline pHneutral pHQuestion 6 of 20 7. The oxygen-hemoglobin dissociation curve shifts to the left under which of the following circumstances?Carbon monoxide poisoningIncreased temperatureDecreased pHIncreased 2,3-diphosphoglycerate (2,3-DPG) D. Increased PCO2Question 7 of 20 8. baby can breathe even while suckling because ofwide and short tongueshort soft palatesmall pharynxhigher position of larynxQuestion 8 of 20 9. Dosage of Vitamin C for curing scurvy:8-10 gm/dayI00-200 mg/day80-100 mg/day800-l000mg/dayQuestion 9 of 20 10. Secretin is produced by:Small intestinePancreasLiverStomachQuestion 10 of 20 11. maximum phosphate is reabsorbed inPCTCollecting ductLoop of henleDCTQuestion 11 of 20 12. all of the following are involved in the transmission of regulatory signals through the ECF exceptG protein coupled receptorsendocrine signals through hormonessynaptic signals through neurotransmittersdirect contact through gap junctionQuestion 12 of 20 13. Thirst is stimulated byIncrease in plasma osmolality and volumeDecrease in plasma osmolality and an increase in plasma volumeDecrease in plasma osmolality and volumeIncrease in plasma osmolality and decrease in plasma volumeQuestion 13 of 20 14. which of the following is not absorbed in PCTH+BicarbonateSodiumPhosphateQuestion 14 of 20 15. Inhibition of heart by vagus is mediated by which receptorsM1NnNmM2Question 15 of 20 16. Inhibition of which of the following could be responsible for impotence as a side effect of a medication?OxytocinNitric oxide synthase (NOS)Forward motility factorConversion of DHT to testosteroneQuestion 16 of 20 17. Beta subunit of insulin receptor binds toGuanylyl cyclaseadenylyl cyclaseTyrosine kinaseIP3-DAGQuestion 17 of 20 18. Human cardiac muscle containsAlpha heavy chain of myosinBoth alpha and beta heavy chains of myosinNone of the aboveBeta heavy chain of myosinQuestion 18 of 20 19. All are functions of Parathormone except:Increasing serum calciumIncreased renal calcium absorptionIncrease serum phosphateBone ResorptionQuestion 19 of 20 20. Acrosome reaction is seen inSpermatogenesisOogenesismenstruationFertilisationQuestion 20 of 20 Loading...
