i can think of tons of questions like:
what is the purpose of the diaphragm in a light microscope.
which of the following is false about the electron microscope: staining, heavy metals, etc etc etc.
if the eyepeace is 10x, and the objective lens has 40x, what is the apparent size of a 5nm object.
whether there are any microscopy questions, on the other hand, is up in the air.