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. True or False: Staining is often required to image a cell that is adherent and flat (thin). Click here to enter answer 2. Which of the following could NOT be seen clearly by the unaided eye? Select all that apply A. Bacteria with diameter of 24 ?m B. Protozoa with diameter of 150 ?m C. Virus with a diameter of 0.2 um D. Skin cell with diameter of 1500 ?m Click here to enter answer-
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Answer #1

True.
The given statement is true.
Since the cell is adherent and thin, staining is required


In average, human eye cannot detect/see objects of size less than 50 to 60 microns
So human eye cannot clearly see bacteria and virus.
Options A and C are correct

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