Question

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

Answer 1

Answer;

too small to be seen with an optical microscope

Explanation;

• An electron microscope is a type of microscope that is used to observe very tiny specimens whose features can not be observed by other types of microscopes. It uses a beam of electrons to generate an image of a given specimen whose features can be clearly observed and studied.
• Electron microscope has very high resolution and magnification as compared to other optical microscope hence can be observed in the study of micro-organisms such as viruses which would be difficult to study their features using optical microscopes.

Answer 2

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.