Final answer:
To view much smaller objects than mites or houseflies, such as cells and molecules, biologists use super microscopes like light, TEM, and SEM, which provide much greater magnification and detail.
Step-by-step explanation:
Biologists who need to view objects much smaller than mites or houseflies, such as cells, viruses, and molecules, utilize advanced super microscopes. These include the light microscope, which is a common tool in classrooms and laboratories for magnifying specimens using lenses focused by light. However, to observe even smaller details, biologists may turn to electron microscopes, including the Transmission Electron Microscope (TEM) and the Scanning Electron Microscope (SEM). TEM is used primarily to view the internal structure of cells and their components, achieving magnifications that can make images up to 2,000,000 times larger. SEM, on the other hand, provides detailed images of the surface of specimens. These advanced microscopes are essential for modern biological research as they allow scientists to analyze structures well beyond the limits of visible light.