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What is a plaque assay used to measure a infectivity

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16. What is a plaque assay used to measure?A.InfectivityB.Cytopathic effectsC.Rate of cell divisionD.Rate of cell fusion
17. With Crystal Violet staining in a plaque assay, what colour are the live cells expected to be?
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18. When would red dots be seen in a hemagglutination assay?
19. Which of the following are methods of physical measurement for viral infection?1.Hemagglutination assay2.Immunoblotting3.Gene sequencing4.Transformation assay
20. Which of the following areTRUEregarding the plaque assay?1.Agar is overlaid in order to prevent spread of infection2.It was first used to characterize the Herpes virus3.Several dilutions are performed prior to counting plates4.Plaques represent areas where uninfected bacterial cells resideA.1, 2 and 3B.1 and 3C.2 and 4D.4 onlyE.All of the above
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Viral Genomes21. Which observation was the key finding of the original Hershey - Chase Experiment of 1952?
22. How does the green fluorescent protein pinpoint the location of a viral protein of interest?

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