Here's why:
* Before the microscope: People had no way to see the tiny structures that make up living things.
* The microscope's impact: The invention of the microscope allowed scientists to see cells for the first time. This observation led to the realization that all living organisms are made up of these basic units.
* Key figures: Robert Hooke, using an early microscope, observed and named "cells" in cork tissue. Anton van Leeuwenhoek further developed the microscope and observed single-celled organisms, contributing significantly to the understanding of cellular structure.
Without the microscope, cell theory would have been impossible to formulate.
