Multiple Choice Questions on Virus

MCQ on Viruses (Question 1-15)

16. Viruses multiplies in

a) Soil
b) Dead tissue
c) Living tissue
d) Culture medium

17. Prophase refers to

a) Viral genome outside the host cell
b) Viral genome that integrates with the bacterial genome
c) Viral genome in the culture medium
d) Newly synthesized viral genome within the host cell

18. Longest known virus is

a) Ø x 174
b) T 1 phage
c) TMV
d) Citrus tristeza

19. Who crystallised and isolated viruses for the first time

a) W.M Stanely
b) F.C. Bawden
c) K.M. Smith
d) D. Ivanowski

20. Which of the following plant virus has DNA in it?

a) Tobacco Mosaic Virus
b) Potato Mosaic Virus
c) Tomato Mosaic Virus
d) Cauliflower Mosaic Virus

21. The Bacteriophage contains an enzyme known as

a) dehydrogenase
b) urease
c) Protease
d) lysozyme

22. Virion is

a) Nucleic acid of virus
b) Protein of virus
c) Antiviral agent
d) Completely assembled virus outside host

23. Which of the following pair of diseases is caused by virus?

a) Rabies, Measles
b) Typhoid, Tetanus
c) Cholera, Tuberculosis
d) AIDS, Syphilis

24. Viral Diseases have no cure because

a) Viruses have no cell wall
b) Presence of capsid
c) Virus possesses no cytoplasm
d) Viruses can multiply repeatedly within the host cell

25. AIDS virus has effect upon

a) Leucocytes
b) Lymphocytes
c) Erythrocytes
d) Thrombocytes

MCQ on Viruses (Question 1-15)

Answers
16. c) Living tissue
17. b) Viral genome that integrates with the bacterial genome
18. d) Citrus tristeza
19. a) W.M Stanely
20.d) Cauliflower Mosaic Virus
21. d) lysozyme
22. d) Completely assembled virus outside host
23. a) Rabies, Measles
24. d) Viruses can multiply repeatedly within the host cell
25. b) Lymphocytes