Biotechnology and Its Applications (PYQs)

Q1. Transgenic plants are the ones:

Q2. Silencing of mRNA has been used in producing transgenic plants resistant to:

Q3. Exploration of molecular, genetic and species level diversity for novel products of economic importance is known as:

Q4. What is true about Bt toxin?

Q5. Match the following columns and select the correct option.

Column-I	Column-II
(a) Bt cotton	(i) Gene therapy
(b) Adenosine deaminase deficiency	(ii) Cellular defence
(c) RNAi	(iii) Detection of HIV infection
(d) PCR	(iv) Bacillus thuringiensis

Q6. Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?

Q7. The genetically-modified (GM) brinjal in India has been developed for:

Q8. Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

Q9. Which of the following statements is not correct?

Q10. Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of:

Q11. Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency?

Q12. The first clinical gene therapy was given for treating

Q13. What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

Q14. Read the following four statements (A-D) about certain mistakes in two of them:
(A) The first transgenic buffalo, Rosie produced milk which was human alpha-lactalbumin enriched.
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules.
(C) Downstream processing is one of the steps of r-DNA technology.
(D) Disarmed pathogen vectors are also used in transfer of r-DNA into the host.
Which are the two statements having mistakes?

Q15. The name of Norman Borlaug is associated with:

Q16. Maximum number of existing transgenic animals is of:

Q17. The crops engineered for glyphosate are resistant/ tolerant to:

Q18. Exploitation of bioresources of a nation by multinational companies without authorisation from the concerned country is referred to as

Q19. In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to:

Q20. RNA interference involves

Q21. Which part of the tobacco plant is infected by Meloidogyne incognita?

Q22. Which one of the following vectors is used to replace the defective gene in gene therapy?

Q23. A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to

Q24. Genetically engineered bacteria have been successfully used in the commercial production of

Q25. Main objective of production/use of herbicide resistant GM crops is to

Q26. Cry endotoxins obtained from Bacillus thuringiensis are effective against

Q27. Ultrasound of how much frequency is beamed into human body for sonography?

Q28. What is true for monoclonal antibodies?

Q29. A transgenic food crop which may help in solving the problem of night blindness in developing countries is

Q30. Genetic engineering has been successfully used for producing:

Q31. Continuous addition of sugars in 'fed batch' fermentation is done to:

Q32. In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

Q33. Consider the following statements about biomedical technologies:
1. During open heart surgery blood is circulated in the heart-lung machine
2. Blockage in coronary arteries is removed by angiography
3. Computerised axial tomography (CAT) shows detailed internal structure as seen in a section of body
4. X-ray provides clear and detailed images of organs like prostate glands and lungs
Which two of the above statements are correct?

Q34. Two microbes found to be very useful in genetic engineering are

Q35. The most common substrate used in distilleries for the production of ethanol is

Q36. Which of the following is true for Golden rice?

Q37. Which of the following Bt crops is being grown in India by the farmers?

Q38. Bacillus thuringiensis forms protein crystals which contain insecticidal protein that

Q39. Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells)

Q40. The first human hormone produced by recombinant DNA technology is:

Q41. Bacillus thuringiensis (Bt) strains have been used for designing novel:

Q42. The bacterium Bacillus thuringiensis is widely used in contemporary biology as

Q43. Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services?

Q44. Consider the following statements (A-D) about organic farming:
(A) Utilizes genetically modified crops like Bt cotton
(B) Uses only naturally produced inputs like compost
(C) Does not use pesticides and urea
(D) Produces vegetables rich in vitamins and minerals
Which of the above statements are correct?

Q45. The process of RNA interference has been used in the development of plants resistant to

Q46. Golden rice is a transgenic crop of the future with the following improved trait:

Q47. Pollen tablets are available in the market for:

Q48. One of the most important reasons why wild plants should thrive is that they are good sources of

Q49. In RNAi, the genes are silenced using :

Q50. Some of the characteristics of Bt cotton are:

Q51. Maximum application of animal cell culture technology today is in the production of