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CHAPTER – 12, BIOTECHNOLOGY AND ITS APPLICATIONS, QUESTION BANK, MCQs, Q-1 Bt Cotton is not, a)a GM Plant, b)insect resistant, c)a bacterial gene expressing system, d)resistant to all pesticides Q-2, C-peptide of human insulin is, a)a part of mature insulin molecule, b)responsible for formation of disulphide bridges, c)removed during maturation of proinsulin to insulin, d)responsible for its biological activity, Q-3 GEAC stands for, a)Genome Engineering Action Committee, b)Ground Environment Action Committee, c)Genetic Engineering Approval Committee, d)Genetic and Environment Approval Committee, Q-4 Biopiracy means, a)use of biopatents, b)thefts of plants and animals, c)stealing of bioresources, d)exploitation of bioresorces without authentic permission, Q-5 A probe which is a molecule used to locate homologous, sequences in a mixture of DNA or RNA molecules could be, a) a ssRNA, b)a ssDNA, c)either RNA or DNA, d)can be ssDNA but not ssRNA, Q-6 Choose the correct option regarding retrovirus, a)An RNA virus that synthesises DNA during infection

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b)A DNA virus that synthesises RNA during infection, c) A ssDNA virus, d)A dsRNA virus, Q-7 The site of production of ADA in the body is, a)erythrocytes, b)lymphocytes, c)blood plasma, d)osteocytes, Q-8 A protoxin is, a)a primitive toxin, b)a denatured toxin, c)toxin produced by protozoa, d)inactive toxin, Q-9 Pathophysiology is the, a)study of physiology of pathogen, b)study of normal physiology of host, c)study of altered physiology of host, d)none of the above, Q-10 The trigger for activation of toxin of Bacillus, thuringiensis is, a)acidic pH of stomach b)high temperature, c)alkaline pH of gut, d)mechanical action in the insect gut, Q-11 Golden Rice is, a)a variety of rice grown along the yellow river in China, b)long stored rice having yellow colour tint, c)a transgenic rice having gene for B – carotene, d)wild variety of rice with yellow coloured grains, Q-12 In RNAi, genes are silenced using, a)ssDNA, b)dsDNA, c)dsRNA, d)ssRNA, Q-13 The first clinical genes therapy was done for the, treatment of, a)AIDS, b)cancer

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c)cystic fibrosis, d)SCID(Severe Combined Immuno Deficiency Resulting from, Deficiency of ADA), Q-14 ADA is an enzyme which is deficient in a genetic, disorder SCID. What is the full form of ADA? a)Adenosine, deoxyaminase, b)Adenosine deaminase, c)Aspartate deaminase, d)Arginine deaminase, Q-15 Silencing of a gene could be achieved through the use, of, a)RNAi only, b)Antisense RNA only, c)Both RNAi and Antisense RNA d)None of these, ANSWERS:, 1.(d) 2.(c) 3.(c) 4.(d) 5.(c) 6.(a) 7.(b) 8.(d) 9.(c), 10.(c) 11.(c) 12.(c) 13.(d) 14.(b) 15.(c)