An electron microscope is usually used for microorganisms that are _____. too small to be seen with the unaided eye too small to be seen with an optical microscope not possible to observe with any instrument
An electron microscope is
usually used for microorganisms that are too small to be seen with the unaided
eye. You can adjust the size of the microorganism to see it more clearly by
adjusting its magnification lens.
too small to be seen with an optical microscope