Why is a cell called an elementary particle of life?

A cell is called an elementary particle of life because it is a complete, closed system. By removing a cell from the body and placing it in a nutrient solution, it will be possible to keep it alive. The cell is able to synthesize for itself the necessary substances from the substances entering it and remove waste or harmful substances outside. The possibility of such an individual existence is fully justified by the presence of unicellular organisms in the biological community.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.