PGI Chandigarh

Question How many base pairs are there in human genome? A. 1 billion B. 3 billion C. 5 billion D. 10 billion E. 12 billion   Show Answer Correct Answer » B Explanation Ans. B. The total length of the human genome is over 3 billion base pairs.

Question True regarding human genome is/are? A. Whole genome is involved in transcription B. There is no gap in coding region C. 3 x 109 base pairs in 23 chromosomes in each haploid cell D. Both coding and non-coding regions are equal in amount E. All the genes are concentrated in coding regions are  

Question Step (s) which is/are common between eukaryotic and bacterial transcription is/are? A. 51 capping B. Binding to the promoter region C. DNA dependent RNA polymerase enzyme involvement D. Poly A-tail addition E. Poly T-tail addition   Show Answer Correct Answer » B:C Explanation Ans. B & C 51 capping & poly A-tail addition are

Question Enzymes with same metallic co-factor are? A. Pyruvate dehydrogenase B. Isocitrate dehydrogenase C. Alpha keto glutamate dehydrogenase D. Glucose – 6- phosphatase E. Glucose-6-phosphate dehydrogenase   Show Answer Correct Answer » A:B:D:E Explanation Ans. A, B, D & E Glutamate dehydrogenase uses zinc as a cofactor whereas all other mentioned options use magnesium as

Question True about olfactory system is/are? A. Olfactory receptors act via c-AMP B. Olfactory pathway passes via thalamus to orbito­frontal cortex C. Adaptation to odour develops after 1-2minutes only D. Olfactory mucosa covers upper 1/3rd of nasal cavity E. Rate of olfactory nerve impulses change approximately in proportion to the logarithm of stimulus strength  

Question Hypothalmic pituitary axis (HPA) controls all except‑ A. Thyroid B. Parathyroid C. Pancreas D. Testis E. Adrenals   Show Answer Correct Answer » B:C Explanation Ans. B & C. Almost all secretion by the pituitary is controlled by either hormonal or nervous signals from the hypothalamus. Secretion from the posterior pituitary is controlled by

Question Fastest acting nerve fibers are? A. Aa B. A C. B D. C E. AS   Show Answer Correct Answer » A Explanation Ans. A. Type A fibers have maximum velocity because they are thick and myelinated. Among A fibers, Aα have maximum conduction because they are thickest and myelinated. Among Afibers conduction velocity

Question Viscosity of blood depends upon? A. Plasma proteins B. RBCs C. Platelets D. Temperature E. Infection   Show Answer Correct Answer » A:B:C:D:E Explanation Ans. A, B, C, D & E The analysis of blood viscosity for shear rates revealed that the blood viscosity of the infected patients was significantly greater than that of

Question True regarding menstrual cycle is? A. LH surge occurs 36 hours prior to ovulation B. Luteal phase is constant C. Proliferative phase is constant D. Progesterone is responsible for increase in temperature E. Peak level of progesterone is reached at 21st day   Show Answer Correct Answer » A:B:D:E Explanation Ans. A, B, D

Question Right combination of velocity (m/s) and pacemaker conduction [beats/minute] for different parts of cardiac conduction system is/are? A. SA node – 0.05 m/s & 60-100 b/m B. AV node – 0.02-0.05 m/s & 40-55 b/m C. Atrial myocardium – 1-1.2 m/s & 25-40 b/m D. Bundle of His – 1.2-2 m/s & 25-40 b/m