Final answer:
Cell theory is based on three tenets: all organisms are composed of cells, cells are alive and the basic units of organization, and all cells come from other cells.
Step-by-step explanation:
The three tenets of cell theory are:
- All organisms are composed of cells. This means that cells are the basic structural and functional units of all living things.
- Cells are alive and the basic living units of organization in all organisms. Cells carry out all the necessary functions of life, such as obtaining energy, reproducing, and responding to their environment.
- All cells come from other cells. This means that new cells are formed through cell division, where existing cells divide to produce more cells.
These tenets have important ramifications for the study of cell biology. They provide a foundation for understanding the structure and function of cells, as well as their role in the organization and functioning of living organisms.