What is the main content of cell theory?

1, cells are organisms, all animals and plants are developed from cells and are composed of cells and cell products.

2. All cells are basically similar in structure and composition.

3. The new unit is derived from the existing unit.

Biological diseases are caused by abnormal cell function.

Extended data 5. Cell is the basic unit of organism structure and function.

6. Organisms reflect their functions through the activities of cells.

7. A cell is a relatively independent unit, which has its own life and plays a role in the whole life composed of other cells.

Significance of cell theory

1 reveals the unity of animals and plants, thus clarifying the unity of the biological world.

2. Reveals that there is a certain genetic relationship between organisms, and clarifies that the cells of modern organisms are all descendants of ancient biological cells, and small cells are condensed with the inheritance and changes of genes for billions of years.

3. Make people realize that the plant kingdom and the animal kingdom have the same structural basis, thus breaking the long-standing ideological gap between botany and zoology, and promoting the long-term accumulation of disciplines such as anatomy, physiology and embryology to obtain the same basis. The integration and unification of these disciplines gave birth to biology.

4. It indicates that biological research has entered the cell level-cell is the basic unit of life activities, which greatly promotes the process of biological research. The conclusion that cells divide to produce new cells not only explains individual development, but also lays the foundation for Darwin's theory of biological evolution and natural selection.