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1. Viroids have:

 
 
 
 

2. Infective nature of Tobacco mosaic disease was discovered by:

 
 
 
 

3. Who among the following discovered virus?

 
 
 
 

4. Prions are pathogens that are thought to consist solely of:

 
 
 
 

5. Genetic material of TMV is:

 
 
 
 

6. Cyanophage is a virus that attacks:

 
 
 
 

7. Bacteriophage consists of:

 
 
 
 

8. The truncated cone of HIV consists of:

 
 
 
 

9. TMV was isolated in crystalline form by:

 
 
 
 

10. Viruses are commonly transmitted in plants through:

 
 
 
 

11. In which of the following, RNA is the genetic material?

 
 
 
 

12. Smallpox is caused by:

 
 
 
 

13. In Herpes virus DNA is:

 
 
 
 

14. The fact that best supports the concept that viruses are living is that viruses:

 
 
 
 

15. Who discovered cyanophages?

 
 
 
 

16. In order to label the coat alone but not the nucleic acid the bacteriophage should be grown on E. coli cells previously cultured on a medium containing:

 
 
 
 

17. Which of the following disease is caused by virus?

 
 
 
 

18. What is a vector?

 
 
 
 

19. Certain enzymes like reverse transcriptase, integrase and protease are found in:

 
 
 
 

20. In which of the following, RNA is double stranded:

 
 
 
 

21. The genetic material of poxvirus is:

 
 
 
 

22. Name the scientist who called viruses as “Contagium vivum fluidum”:

 
 
 
 

23. Viruses have:

 
 
 
 

24. The lambda phase is a:

 
 
 
 

25. D.C. Gajdusek was awarded the Nobel Prize for discovery of prion based diseases in:

 
 
 
 

26. Bacteria differ from viruses in being sensitive to:

 
 
 
 

27. Who named prion?

 
 
 
 

28. The capsid of TMV is made-up of nearly:

 
 
 
 

29. RNA particle causing symptoms like that of a virus disease are known as:

 
 
 
 

30. The virus responsible for AIDS is an example of a (an):

 
 
 
 

31. In a bacteriophage, DNA is present in:

 
 
 
 

32. The site where the protein coat of virus is synthesized is:

 
 
 
 

33. Interferon is a:

 
 
 
 

34. Number of capsomeres forming capsid of TMV is:

 
 
 
 

35. The smallest known agent of a plant disease is:

 
 
 
 

36. Kuru, a human disease is caused by:

 
 
 
 

37. Chrysanthemum stunt disease and potato spindle tuber disease are caused by:

 
 
 
 

38. An infectious agent associated with certain mammalian degenerative disease that is composed solely of protein, is known as:

 
 
 
 

39. Which is an exception to cell theory?

 
 
 
 

40. Enzymes are absent in:

 
 
 
 

41. Infective part of virus was discovered by:

 
 
 
 

42. A substance (a low molecular weight protein) produced by host cells in response to viral infection, that protects other cells against further viral infection is:

 
 
 
 

43. Group of viruses, which attack members of Myxophyceae are termed as:

 
 
 
 

44. Infective portion of a virus is nucleic acid, this was discovered by:

 
 
 
 

45. Viruses are considered to be:

 
 
 
 

46. Yellow vein Mosaic of Bhindi Virus (Hibiscus Virus-I) is transmitted through:

 
 
 
 

47. Detailed study of bacteriophage was made by:

 
 
 
 

48. Which of the following is true for viruses?

 
 
 
 

49. Bacteriophages have been used as:

 
 
 
 

50. Which of the following protein is associated with prion disease?

 
 
 
 

51. Which of the following is correct regarding AIDS causative agent HIV? (NEET 2016)

 
 
 
 

52. First animal pathogenic virus was discovered by:

 
 
 
 

53. AIDS (= Acquired Immune Deficiency Syndrome) is caused by:

 
 
 
 

54. Virion refers to:

 
 
 
 

55. Longest known virus is:

 
 
 
 

56. The first to isolate a plant virus was:

 
 
 
 

57. Virus and bacteriophage are made-up of:

 
 
 
 


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