GATE XL discipline:life-sciences PYQs & Answers — Page 71

Questions 701–710 of 1235. Imported answers require independent review unless marked reviewed.

In adult athletes, muscles grow larger when exercised and are capable of regeneration after injury. This is due to proliferation and differentiation of

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satellite cells

myelin sheath

oxyntic cells

chaonocytes

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The term innate behavior is a sort of animal behavior that is

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triggered by an environmental change

learnt by hit-and-trial approach

trained and taught by the parent

fixed developmentally at the genetic level

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A man, whose mother and father had blood groups A and O respectively, marries a woman with blood group AB. If the man has blood group A, then the number of different blood groups possible among their children will be ________ (in integer).

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A population of snakes in an isolated island is in Hardy-Weinberg equilibrium for a gene with only two alleles (A and a). If the allelic frequency of A is 0.6, then the genetic frequency of Aa is ________ (round off to 2 decimal places).

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In the structure of a polypeptide, one α-helix (3.6₃ helix) contains 32 intra-chain hydrogen bonds. The number of turns in the helix will be ________ (in integer).

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Match the terms in Column I with the specific descriptions in Column II

Column I P. Zygote Q. Morula R. Blastocyst S. Ovum T. Neonate U. Fetus

Column II (i) A hollow sphere of cells (ii) A newly born offspring (iii) A cell that results from fertilization (iv) An embryo (v) An unfertilized egg (vi) A compact mass of cells

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P-(ii), Q-(vi), R-(i), S-(v), T-(ii), U-(iv)

P-(v), Q-(ii), R-(iii), S-(vi), T-(i), U-(iv)

P-(ii), Q-(iv), R-(vi), S-(v), T-(i), U-(iii)

P-(iii), Q-(vi), R-(ii), S-(v), T-(iv), U-(i)

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Match the autoimmune diseases in Column I for the self-antigens in Column II

Column I P. Rheumatoid arthritis Q. Systemic lupus erythematosus R. Myasthenia gravis S. Multiple sclerosis

Column II (i) Myelin (ii) Connective tissue (iii) DNA (iv) Acetylcholine receptors

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P-(i), Q-(ii), R-(iii), S-(iv)

P-(ii), Q-(iii), R-(iv), S-(i)

P-(iii), Q-(i), R-(iv), S-(ii)

P-(iv), Q-(i), R-(ii), S-(iii)

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Match the types of cell movements during gastrulation in Column I with the descriptions in Column II

Column I P. Invagination Q. Involution R. Ingression S. Delamination

Column II (i) Migration of individual cells from the surface into the embryo’s interior (ii) Infolding of a sheet (epithelium) of cells during the formation of endoderm in sea urchin (iii) Splitting of one cellular sheet into two nearly parallel sheets (iv) Inward movement of an expanding outer layer of cells so that it spreads over the internal surface of the remaining external cells

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P-(ii), Q-(iii), R-(iv), S-(i)

P-(iv), Q-(i), R-(iii), S-(ii)

P-(ii), Q-(iv), R-(i), S-(iii)

P-(iii), Q-(ii), R-(iv), S-(i)

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Match the therapeutic factors in Column I with the applications in Column II

Column I P. Humulin Q. Erythropoietin R. Plasminogen activator S. Cathepsin K inhibitor T. Leptin

Column II (i) Cancer therapy (ii) Diabetes (iii) Osteoporosis (iv) Anaemia (v) Myocardial infarction (vi) Obesity

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P-(ii), Q-(iv), R-(v), S-(iii), T-(vi)

P-(ii), Q-(v), R-(i), S-(iv), T-(iii)

P-(v), Q-(vi), R-(iv), S-(iii), T-(i)

P-(iii), Q-(iv), R-(ii), S-(v), T-(vi)

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Match the cell organelles in Column I with the appropriate functions in Column II

Column I P. Peroxisome Q. Endoplasmic reticulum R. Glyoxysome S. Golgi complex T. Centrioles

Column II (i) Conversion of lipid to carbohydrate (ii) Oxidation of fatty acids (iii) N-linked glycosylation (iv) Microtubule organization center (v) O-linked glycosylation

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P-(ii), Q-(iii), R-(v), S-(i), T-(iv)

P-(iv), Q-(v), R-(i), S-(ii), T-(iii)

P-(iv), Q-(v), R-(iii), S-(i), T-(ii)

P-(ii), Q-(iii), R-(i), S-(v), T-(iv)

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GATE XL discipline:life-sciences PYQs

Question 6

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Question 14

Question 15