A scientist wants to know wheter a particular cell is round or rectangular. How should the scientist observe the overall shape of the cell?

The shape of a cell can easily be seen through a light microscope.

Explanation:

A microscope can be defined as a device which is used to visualize things which are otherwise not visible to the naked eye. The shape of a cell can be seen even through a light microscope. For example, an animal cell can be seen to have a round shape under the light microscope, a plant cell will be seen rectangular under the light microscope.

Other microscopes such as the electron microscope can even show the organelles present inside the cell.