Respuesta :
Answer:
C) cell theory
Explanation:
After the invention of the microscope, it was observed that materials collected from living beings were formed by structures with several cavities, which were now called cells.
Several studies were performed to observe the cells, and it was proposed that all living beings are formed by cells. This idea became the basis of cellular theory.
Cell theory is composed of three basic principles:
- All living beings are formed by cells and structures formed by them;
- Cells are functional units of organisms, since several vital processes take place within them;
- Cells originate through cell division, in other words, one cell can only exist from another pre-existing one.