. 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.

Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Christine Evers, Lisa Starr
Chapter13: Early Life Forms And The Viruses
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1. 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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