Title 12. BIOTECHNOLOGY AND ITS APPLICATIONS.pdf ✅

12. BIOTECHNOLOGY AND ITS APPLICATIONS 1. How many of the Dipteran insects are killed by the proteins Produced from Bacillus thuringiensis? [Beetles, Flies, Tobacco, Budworm, Armyworm] (a) None (b) One (c) Two (d) Three 2. Cotton bollworms are controlled by the proteins coded by : (a) Cry I Ac (b) Cry I Ab (c) Cry I Ab and Cry I Ac (d) Cry I Ac and Cry II Ab 3. Development of a genetically modified pest resistant crop depends upon: (a) Crop only (b) Soil in which the crop is grown (c) Crop and targeted pest (d) Targeted pest and soil texture 4. Select the incorrect statement: (a) Recombinant therapeutics do not produce unwanted immunological responses (b) First clinical gene therapy was given in 1983 (c) RNA interference involves silencing of m-RNA (d) In India, 12 recombinant therapeutics are being marketed at present 5. Most of the transgenic animals are: (a) Mice (b) Cows (c) Pigs (d) Rabbits 6. Incorrect about Bt toxin is: (a) Synthesised by Bt gene (b) Extracted from a bacteria (c) Protein in nature (d) Kills the insect by affecting nervous system 7. Genetically modified rice is rich in: (a) Vitamin A (b) Vitamin B12 (c) Vitamin D (d) Vitamin E 8. Select a coleopteran insect that is killed by action of Bt toxin: (a) Beetles (b) Flies (c) Army worm (d) Tobacco budworm 9. Select the Incorrect statement: (a) Bt cotton is resistant from the infection of Bacillus thuringiensis. (b) During green revolution food production was tripled. (c) cry genes code for Bt toxins t (d) Genetically modified rice is rich in Vitamin A. 10. Read the statements (A-F) and answer the question which follows them: (A) Environmental pollution is caused by genetically modified crops. (B) Exhaustion of fertility of soil can be delayed by use of genetically modified crops. (C) Lepidopteran insects like beetles can be killed by some toxins produced by Bacillus thuringlensis. (D) Downstream processing technologies for purification of products is one of the three critical research areas of biotechnology. (E) Bt toxin destroys the hindgut epithelial cells of insects. (F) Cry I Ac gene code for proteins that control the