Q. In the growth curve of plaque-forming units, the time from infection until lysis is known as ____________________

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Q. What is the colour of the plaque formed?

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Q. What does a viral DNA becomes after being associated with the bacterial chromosome?

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Q. In which of the following method, the viral particles are transmitted through lysis of cell?

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Q. epressor protein makes the cell resistant to lysis.

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Q. Which of the following is the characteristic of repressor protein?

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Q. cro gene is an example of immunity repressor.

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Q. Which of the following gene codes for an enzyme which directs the insertion of the phage DNA into the bacterial chromosome?

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Q. Which of the following phage do not cause lysogeny?

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Q. The protein integrase is encoded by which of the following gene?

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Q. In which of the following phage prophage exists as a circular form?

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Q. From which of the following animal was the material isolated which was used for the vaccination for the first time?

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Q. Vaccination was invented by ____________

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Q. Causative agent of tobacco mosaic disease was filterable.

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Q. Yellow fever virus can be attenuated by serial passage on cultures of ________________________

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Q. Effective poliomyelitis vaccines were developed by culturing the virus of poliomyelitis on the kidney cells of which animal?

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Q. For which viral disease, vaccine has been recently developed through the use of tissue culture?

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Q. Rubella vaccines contain viruses are isolated only in African green monkey cells.

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Q. Translation of mRNA into proteins takes place in the ________________

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Q. Which of the following symmetry is exhibited by rod-shaped viruses?

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