Microscope

Definition

A microscope is an instrument used to magnify and visualize small objects that are not visible to the naked eye, such as cells. It is essential for studying cellular structures and functions in biology.

5 Must Know Facts For Your Next Test

1. Microscopes can be categorized into light microscopes and electron microscopes, each with different magnification capabilities.
2. Light microscopes use visible light to illuminate samples and can magnify up to around 1000x.
3. Electron microscopes use beams of electrons for higher magnification and resolution, allowing visualization of much smaller structures.
4. Cells were first observed by Robert Hooke in 1665 using a microscope, leading to the development of cell theory.
5. Microscopes have been crucial in advancing biological sciences by enabling the detailed study of cellular components like organelles.

Review Questions

• What are the two main types of microscopes used in biological studies?
• Why are electron microscopes able to achieve higher magnification than light microscopes?
• How did the invention of the microscope contribute to the development of cell theory?

Related terms

Light Microscope: An optical instrument that uses visible light and lenses to magnify small objects.

Electron Microscope: A type of microscope that uses electron beams for greater magnification and resolution.

Cell Theory: The scientific theory stating that all living organisms are composed of cells, which are the basic unit of life.