Question

A microscopes field of view is 2mm in diameter. 1mm is equal to 1000 micrometers (µm). When viewing onion skin cells under this microscope 10 cells could be seen to fill the field of view lengthwise.

Calculate the average length of the onion skin cells in µm.

Answer 1

Length of cell = 2000 µm / 10 = 200 µm