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11.  In a virus, the virion consists of:
A. Capsid and DNA B. Capsid and RNA
C. Capsid and both nucleic acids D. None of these

12.  The enzymes helping a virus to penetrate into host cell by dissolving its wall is:
A. Nuclease B. Cellulase
C. Neuroaminidiase D. Phosphorylase

13.  Which of the following characters justify the non-living nature of viruses:
A. Non-cellular structure of viruses B. Absence of metabolism and enzymes
C. Property of being crystallized and stored in the bottles D. All of these

14.  Which of the following characters justify the living nature of viruses:
A. They can multiply within host cells B. They have capability of mutations
C. They can synthesize proteins for forming capsid D. All of these

15.  Term bacteriophage is given to:
A. A bacteria which is parasite on viruses B. A virus which is a parasite on bacterium
C. Both (a) and (b) D. None of these

16.  "Smallest virus is 10m in size while largest known virus is 350m, whether this statement is:
A. Correst B. Wrong
C. Partially wrong D. None of these

17.  "TMV (Tobacco Mosaic Virus) is rod whaped while Polio and Influenza viruses are spherical" whether this statement is:
A. TRUE B. FALSE
C. Partially false D. None of these

18.  "Core" in the virus is made up of:
A. Cellulose B. Nucleic acids
C. Plasma membrane D. Nuclear membrane

19.  Protective sheath in virus is called:
A. Capsid B. Plasma membrane
C. Sarcolemma D. None of these

20.  Which is first known human viral disease:
A. Polio B. Yellow fever
C. Influenza D. Typhoid




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