Question

The instrument used to observe cells is ________.

Answer 1

Microscope:

1. The majority of cells are too tiny to be seen with the human eye.
2. Therefore, to study cells, scientists must utilize microscopes.
3. Compared to optical microscopes, electron microscopes offer greater magnification, resolution, and detail.
4. A typical human red blood cell has a diameter of eight-millionths of a meter, or eight micrometers (abbreviated as µm), while the head of a pin has a diameter of around two thousandths of a meter (millimeters, or mm).
5. Thus, 250 red blood cells or so may fit on the head of a pin.

Final answer: The instrument used to observe cells is Microscope.