CSIR Life Science Question Paper with Answers June And December 2016.
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CSIR Life Science Question Paper with Answers June And December 2016
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CSIR NET 2016 LIFE SCIENCE
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- Question 1 of 145
1. Question
1 pointsCorrectIncorrect - Question 2 of 145
2. Question
1 pointsCorrectIncorrect - Question 3 of 145
3. Question
1 pointsA shopkeeper purchases a product for Rs.100 and sells it making a profit of 10%. The customer resells it to the same shopkeeper incurring a loss of 10%. In these dealings the shopkeeper makes
CorrectIncorrect - Question 4 of 145
4. Question
1 pointsCorrectIncorrect - Question 5 of 145
5. Question
1 pointsA person walks downhill at 10 km/h, uphill at 6 km/h and on the plane at 7.5 km/h. If the person takes 3 hours to go from a place A to another place B, and 1 hour on the way back, the distance between A and B is
CorrectIncorrect - Question 6 of 145
6. Question
1 pointsCorrectIncorrect - Question 7 of 145
7. Question
1 pointsAt one instant, the hour hand and the minute hand of a clock are one over the other in between the markings for 5 and 6 on the dial. At this instant, the tip of the minute hand
CorrectIncorrect - Question 8 of 145
8. Question
1 pointsCorrectIncorrect - Question 9 of 145
9. Question
1 pointsA cubical cardboard box made of 1 cm thick card board has outer side of 29 cm. A tight-fitting cubical box of the same thickness is placed inside it, then another one inside it and so on. How many cubical boxes will be there in the entire set?
CorrectIncorrect - Question 10 of 145
10. Question
1 pointsCorrectIncorrect - Question 11 of 145
11. Question
1 pointsCorrectIncorrect - Question 12 of 145
12. Question
1 pointsCorrectIncorrect - Question 13 of 145
13. Question
1 pointsStatement A. The following statement is true Statement B. The preceding statement is false.
Choose the correct inference from the following:
CorrectIncorrect - Question 14 of 145
14. Question
1 pointsA car is moving at 60km/h. The instantaneous velocity of the upper most points of its wheels is
CorrectIncorrect - Question 15 of 145
15. Question
1 pointsIf D + I + M = 1501
C + I + V + I + L = 157
L + I + V + I + D = 557
C + I + V + I + C = 207
What is V + I + M = ?
CorrectIncorrect - Question 16 of 145
16. Question
1 pointsCorrectIncorrect - Question 17 of 145
17. Question
1 pointsDensity of a rice grain is 1.5 g/cc and bulk density of rice heap is 0.80 g/cc. If a 1 litre container is completely filled with rice, what will be the approximate volume of pore space in the container?
CorrectIncorrect - Question 18 of 145
18. Question
1 pointsA turtle starts swimming from a point A located on the circumference of a circular pond. After swimming for 4 meters in a straight line it hits point B on the circum-ference of the pond. From there it changes direction and swims for 3 meters in a straight line and arrives at point D diametrically opposite to point A. How far is point D from A?
CorrectIncorrect - Question 19 of 145
19. Question
1 pointsCorrectIncorrect - Question 20 of 145
20. Question
1 pointsA film projector and microscope give equal magnification. But a film projector is not used to see living cells because
CorrectIncorrect - Question 21 of 145
21. Question
1 pointsCorrectIncorrect - Question 22 of 145
22. Question
1 pointsCorrectIncorrect - Question 23 of 145
23. Question
1 pointsEnzymes accelerate a reaction by which one of the following strategies?
CorrectIncorrect - Question 24 of 145
24. Question
1 pointsCoupling of the reaction centers of oxidative phosphorylation is achieved by which one of the following?
CorrectIncorrect - Question 25 of 145
25. Question
1 pointsCorrectIncorrect - Question 26 of 145
26. Question
1 pointsCorrectIncorrect - Question 27 of 145
27. Question
1 pointsGlycophorin having one highly hydrophobic domain is able to span a phospholipid bilayer membrane only
CorrectIncorrect - Question 28 of 145
28. Question
1 pointsCorrectIncorrect - Question 29 of 145
29. Question
1 pointsWhich one of the following chemicals is a DNA intercalator?
CorrectIncorrect - Question 30 of 145
30. Question
1 pointsAn antibiotic that resembles the 3’end of a charged tRNA molecule is:
CorrectIncorrect - Question 31 of 145
31. Question
1 pointsCorrectIncorrect - Question 32 of 145
32. Question
1 pointsCorrectIncorrect - Question 33 of 145
33. Question
1 pointsCytotoxic T cells express
CorrectIncorrect - Question 34 of 145
34. Question
1 pointsThe mutation in an oncogene falls under which of the following classes?
CorrectIncorrect - Question 35 of 145
35. Question
1 pointsWhich of the following is NOT a cell adhesion protein?
CorrectIncorrect - Question 36 of 145
36. Question
1 pointsWhich of the following is NOT a second messenger?
CorrectIncorrect - Question 37 of 145
37. Question
1 pointsIn chick, development of wing feather, thigh feather and claws depends on epithelial specificity conferred by induction from mesenchymal components from different sources of the dermins. This may be attributed to?
CorrectIncorrect - Question 38 of 145
38. Question
1 pointsAlveolar cells of the lung arise from which one of the following layer(s)?
CorrectIncorrect - Question 39 of 145
39. Question
1 pointsMigration of individual cells from the surface into the embryo’s interior is termed as
CorrectIncorrect - Question 40 of 145
40. Question
1 pointsFloral organ development is controlled by overlapping expression of ‘A’ class, ‘B’ class and ‘C’ class genes in different whorls. In an Arabidopsis mutant, the flowers had sepals, sepals, carpels and carpels in the four whorls. Mutation in which one of the following is the cause for the mutant phenotype?
CorrectIncorrect - Question 41 of 145
41. Question
1 pointsPhenylalanine, a precursor of most of the phenolics in higher plants is a product of which one of the following pathways?
CorrectIncorrect - Question 42 of 145
42. Question
1 pointsCorrectIncorrect - Question 43 of 145
43. Question
1 pointsCorrectIncorrect - Question 44 of 145
44. Question
1 pointsCorrectIncorrect - Question 45 of 145
45. Question
1 pointsA diabetic patient developed metabolic acidosis resulting in deep and rapid breathing which is called-
CorrectIncorrect - Question 46 of 145
46. Question
1 pointsWhich one of the following is NOT involved with the pacemaker potential of heart?
CorrectIncorrect - Question 47 of 145
47. Question
1 pointsYou are asked to identify the stage of estrus cycle in vaginal smear of a mouse containing large number of leukocytes and very few nucleated epithelial cells. Which one of the following will be the correct stage of estrous cycle?
CorrectIncorrect - Question 48 of 145
48. Question
1 pointsWhich one of the following neurotransmitters is secreted by the pre-ganglionic neurons of sympathetic nervous system?
CorrectIncorrect - Question 49 of 145
49. Question
1 pointsCorrectIncorrect - Question 50 of 145
50. Question
1 pointsMutation in gene ‘X’ leads to lethality in a haploid organism. Which one of the following is best suited to analyse the function of gene ‘X’?
CorrectIncorrect - Question 51 of 145
51. Question
1 pointsCorrectIncorrect - Question 52 of 145
52. Question
1 pointsIn a heterozygous individual for a given gene, if a crossing over has occurred between the gene locus and the centromere of the chromosome, the segregation of the two alleles of the given gene will occur during meiosis at
CorrectIncorrect - Question 53 of 145
53. Question
1 pointsMost members of bryophyte phylum Anthocerophyta are characterized by
CorrectIncorrect - Question 54 of 145
54. Question
1 pointsIdentify the correct match between the animal (flatworm, earthworm, roundworm) and its body cavity type (acoelomate, coelomate, pseudo- coelomate):
CorrectIncorrect - Question 55 of 145
55. Question
1 pointsWhich one of the following gymnosperm phyla produces motile sperms, bears ovulate and microsporangiate cones on separate plants and has fleshy, coated seeds?
CorrectIncorrect - Question 56 of 145
56. Question
1 pointsAccording to 2014 IUCN Red List, which of the following vertebrate classes has the largest percentage of threatened species?
CorrectIncorrect - Question 57 of 145
57. Question
1 pointsCorrectIncorrect - Question 58 of 145
58. Question
1 pointsWhich gas does NOT contribute to global warming through its greenhouse effect?
CorrectIncorrect - Question 59 of 145
59. Question
1 pointsA red coloured tubular flower without any odour is most likely to be pollinated by
CorrectIncorrect - Question 60 of 145
60. Question
1 pointsWhich one of the following conditions is NOT likely to favour male monogamy?
CorrectIncorrect - Question 61 of 145
61. Question
1 pointsThe origin and diversification of Angio- sperms was during which geological period?
CorrectIncorrect - Question 62 of 145
62. Question
1 pointsWhich of the following statements about evolution is NOT true?
CorrectIncorrect - Question 63 of 145
63. Question
1 pointsWhich among the following is the simplest method to estimate the concentration of glycerol in an aqueous solution of glycerol?
CorrectIncorrect - Question 64 of 145
64. Question
1 pointsApplication of gene therapy in clinical trials did NOT succeed due to
CorrectIncorrect - Question 65 of 145
65. Question
1 pointsA gene expressing a 50 kDa protein from an eukaryote was cloned in an E. coli plasmid under the lac promoter and operator. Upon addition of IPTG, the 50 kDa protein was not detected. Which one of the following explains the above observation?
CorrectIncorrect - Question 66 of 145
66. Question
1 pointsNeomycin phosphortransferase gene, frequently used as a selection marker during plant transformation, inactivates which one of the following antibiotics?
CorrectIncorrect - Question 67 of 145
67. Question
1 pointsWhich one of the following techniques will you use to identify more than 1000 differentially expressed genes in normal and tumor tissues in one single experiment?
CorrectIncorrect - Question 68 of 145
68. Question
1 pointsFor identification of three proteins moving together (as a single band) upon loading in a single lane of a SDS-PAGE gel, the best method is:
CorrectIncorrect - Question 69 of 145
69. Question
1 pointsCorrectIncorrect - Question 70 of 145
70. Question
1 pointsWhich one of the following would contribute to intrinsic fluorescence to a protein?
CorrectIncorrect - Question 71 of 145
71. Question
1 pointsCorrectIncorrect - Question 72 of 145
72. Question
1 pointsCorrectIncorrect - Question 73 of 145
73. Question
1 pointsCorrectIncorrect - Question 74 of 145
74. Question
1 pointsCorrectIncorrect - Question 75 of 145
75. Question
1 pointsCorrectIncorrect - Question 76 of 145
76. Question
1 pointsCorrectIncorrect - Question 77 of 145
77. Question
1 pointsA culture medium contains two carbon sources, one is preferred carbon source (glucose) and the second is a non-preferred source (lactose).
Which one below is correct regarding the nature of growth curve of E. coli cultured in this medium?
CorrectIncorrect - Question 78 of 145
78. Question
1 pointsWhich one of the following statements correctly applies to proteins which are translated on the rough endoplasmic reticulum?
CorrectIncorrect - Question 79 of 145
79. Question
1 pointsLipid rafts are rich in both sphingolipids and cholesterol. Cholesterol plays a central role in raft formation since lipid rafts apparently do not form in its absence. Why do you think cholesterol is essential for the formation of lipid rafts?
CorrectIncorrect - Question 80 of 145
80. Question
1 pointsCorrectIncorrect - Question 81 of 145
81. Question
1 pointsCorrectIncorrect - Question 82 of 145
82. Question
1 pointsThe frequency of cells in a population that are undergoing mitosis (the mitotic index) is a convenient way to estimate the length of the cell cycle. In order to measure the cell cycle in the liver of the adult mouse by measuring the mitotic index, liver slices are prepared and stained to easily identify cells undergoing mitosis. It was observed that only 3 out of 25,000 cells are found to be undergoing mitosis. Assuming that M phase lasts 30 minutes, calculate the approximate length of the cell cycle in the liver of an adult mouse?
CorrectIncorrect - Question 83 of 145
83. Question
1 pointsCorrectIncorrect - Question 84 of 145
84. Question
1 pointsThe mismatch repair activity of E.coli repairs misincorporated bases which is not removed by the proofreading activity of DNA polymerase. However, while doing so, it has to decide which strand of the DNA is newly synthesized and which one is parental. Mismatch repair system does it by which one of the following ways?
CorrectIncorrect - Question 85 of 145
85. Question
1 pointsCorrectIncorrect - Question 86 of 145
86. Question
1 pointsCorrectIncorrect - Question 87 of 145
87. Question
1 pointsCorrectIncorrect - Question 88 of 145
88. Question
1 pointsCorrectIncorrect - Question 89 of 145
89. Question
1 pointsCorrectIncorrect - Question 90 of 145
90. Question
1 pointsCorrectIncorrect - Question 91 of 145
91. Question
1 pointsCorrectIncorrect - Question 92 of 145
92. Question
1 pointsCorrectIncorrect - Question 93 of 145
93. Question
1 pointsCorrectIncorrect - Question 94 of 145
94. Question
1 pointsCorrectIncorrect - Question 95 of 145
95. Question
1 pointsInstructive and permissive interactions are two major modes of inductive interaction during development. The following compares some properties of cell lines and cord blood stem cells. Cell lines, which are stored in liquid nitrogen, can be retrieved for experiments, where they behave as per their original self. Cord blood can also be retrieved from liquid nitrogen for procuring stem cells. Unlike cell lines, the stem cells can be additionally induced to undergo differentiation into desired lineages, which are very different from their original self. The behaviour of cell lines and stem cells is analogous to which of the interactions?
CorrectIncorrect - Question 96 of 145
96. Question
1 pointsCorrectIncorrect - Question 97 of 145
97. Question
1 pointsSuccessful fertilization in sea urchin demands specific interaction between proteins and receptors of sperms and eggs. In view of the above, which one of the following combinations is correct?
CorrectIncorrect - Question 98 of 145
98. Question
1 pointsCorrectIncorrect - Question 99 of 145
99. Question
1 pointsCorrectIncorrect - Question 100 of 145
100. Question
1 pointsCorrectIncorrect - Question 101 of 145
101. Question
1 pointsCorrectIncorrect - Question 102 of 145
102. Question
1 pointsCorrectIncorrect - Question 103 of 145
103. Question
1 pointsCorrectIncorrect - Question 104 of 145
104. Question
1 pointsCorrectIncorrect - Question 105 of 145
105. Question
1 pointsCorrectIncorrect - Question 106 of 145
106. Question
1 pointsCorrectIncorrect - Question 107 of 145
107. Question
1 pointsCorrectIncorrect - Question 108 of 145
108. Question
1 pointsCorrectIncorrect - Question 109 of 145
109. Question
1 pointsCorrectIncorrect - Question 110 of 145
110. Question
1 pointsCorrectIncorrect - Question 111 of 145
111. Question
1 pointsThe afferent nerve fibres of a stretch reflex were electrically stimulated and the contraction of the muscle innervated by efferent fibres was recorded. The synaptic delay was calculated from the time points of the nerve stimulation and response of the muscle. Which one of the following time durations will be probable value for the observed synaptic delay?
CorrectIncorrect - Question 112 of 145
112. Question
1 pointsCorrectIncorrect - Question 113 of 145
113. Question
1 points
CorrectIncorrect - Question 114 of 145
114. Question
1 pointsTwo siblings who inherit 50% of the genome from the mother and 50% from the father show lot of phenotypic differences. Which one of the following events during gametogenesis of the parents will maximally contribute to this difference?
CorrectIncorrect - Question 115 of 145
115. Question
1 points
CorrectIncorrect - Question 116 of 145
116. Question
1 pointsCorrectIncorrect - Question 117 of 145
117. Question
1 points
CorrectIncorrect - Question 118 of 145
118. Question
1 pointsOf the following, which one of the individuals will NOT necessarily carry the allele responsible for the mentioned trait?
CorrectIncorrect - Question 119 of 145
119. Question
1 pointsCorrectIncorrect - Question 120 of 145
120. Question
1 pointsCorrectIncorrect - Question 121 of 145
121. Question
1 pointsCorrectIncorrect - Question 122 of 145
122. Question
1 pointsCorrectIncorrect - Question 123 of 145
123. Question
1 pointsCorrectIncorrect - Question 124 of 145
124. Question
1 pointsCorrectIncorrect - Question 125 of 145
125. Question
1 pointsCorrectIncorrect - Question 126 of 145
126. Question
1 pointsCorrectIncorrect - Question 127 of 145
127. Question
1 pointsA population is growing logistically with a growth rate (r) of 0.15/week, in an environment with a carrying capacity of 400. What is the maximum growth rate (No. of individuals/week) that this population can achieve?
CorrectIncorrect - Question 128 of 145
128. Question
1 pointsCorrectIncorrect - Question 129 of 145
129. Question
1 pointsCorrectIncorrect - Question 130 of 145
130. Question
1 pointsCorrectIncorrect - Question 131 of 145
131. Question
1 pointsCorrectIncorrect - Question 132 of 145
132. Question
1 pointsCorrectIncorrect - Question 133 of 145
133. Question
1 pointsIndividual A can derive ‘fitness’ benefit of 160 units by helping Individual B, but incurs a ‘fitness’ cost of 50 units in doing so. Following Hamilton’s Rule, A should help B ONLY if B is his
CorrectIncorrect - Question 134 of 145
134. Question
1 pointsThe “Red Queen Hypothesis” is related to
CorrectIncorrect - Question 135 of 145
135. Question
1 pointsCorrectIncorrect - Question 136 of 145
136. Question
1 pointsAs cancer progresses, several genome rearrangements including translocation, deletion, duplications etc. occur. If these rearrangements are to be identified, which of the following techniques would be most suitable?
CorrectIncorrect - Question 137 of 145
137. Question
1 pointsCorrectIncorrect - Question 138 of 145
138. Question
1 pointsCorrectIncorrect - Question 139 of 145
139. Question
1 pointsCorrectIncorrect - Question 140 of 145
140. Question
1 pointsCorrectIncorrect - Question 141 of 145
141. Question
1 pointsCorrectIncorrect - Question 142 of 145
142. Question
1 pointsA researcher is studying the subcellular localization of a particular protein ‘X’ in an animal cell. The researcher performs successive centrifugation at increasing rotor speed. The researcher starts spinning the cellular homogenate at 600g for 10 min, collects the pellet, spins the supernatant at 10,000 g for 20 min, collects the pellet, spins the supernatant at 100,000g for 1 hour, collects both the pellet and the final supernatant. On subjecting various pellets and the final supernatant to Western blotting with anti-protein-X antibody, the protein X is observed to be maximally expressed in pellet after centrifugation at 10,000 g. Based on the above observation, what will be the most likely localization of protein X.
CorrectIncorrect - Question 143 of 145
143. Question
1 pointsFluorescence recovery after photobleaching in live cells is used to determine
CorrectIncorrect - Question 144 of 145
144. Question
1 pointsCorrectIncorrect - Question 145 of 145
145. Question
1 pointsDuring an experiment, a student found increased activity of a protein, for which there were three possible explanations, viz., increased expression of the protein, increased phosphorylation, or increased interaction with other effector proteins. After conducting several experiments, the student concluded that increased activity was due to increased phosphorylation. Which one of the following experiments will NOT support/provide the correct explanation drawn by the student?
CorrectIncorrect
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