. Why is it helpful that the transmission compound light microscopes we studied in the lab are both parfocal and parcentered?  2. Why would it be harder to find a specimen on a slide starting with the 40x objective lens compared to the 4x objective lens. Support your answer with facts about the field of view and the comparison of both objective lenses. 3. If I wanted to observe something, let's a virus that was 50nm in size, which microscope would you recommend me using? Support your answer with facts about the microscopic utility.

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Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.