The diagram below is of an Amoeba. The actual size, measured between points A and B, is 320 µm.
When a student measured the same distance using an image from a microscope they determined the size to be 128 000 µm.
Calculate the magnification of this Amoeba. Show your working.
Whilst examining the Amoeba the student also measured the length of the organelles present, including the nucleus. The length of the nucleus on the microscope image was 28 000 µm.
Assuming the same magnification as part (a), calculate the actual size of the nucleus. Give your answer in mm.
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