A small insect, such as an ant, is best viewed with
a Low power microscope.
A tissue's cells are best viewed with a High power microscope .
Explanation:
A low power microscope is best used for viewing small objects which can be spotted by the naked eye. People use a low power microscope to get a better and closer look at small insects such as a housefly, an ant or a bug. The range of these microscopes is about 10x - 80x.
Objects which cannot be seen by the naked eyes such as bacteria, virus or tissue are best viewed by a high power microscope. The range of these microscopes is about 1000x