By the structure of the cell, biologists divide all living things into “pre-nuclear” organisms – prokaryotes and “nuclear” – eukaryotes. All bacteria and blue-green algae (cyanae) were included in the prokaryotic group, and fungi, plants, and animals fell into the eukaryotic group.
Thus, at present, two levels of cellular organization and, accordingly, two large types of cells are distinguished: prokaryotic and eukaryotic.
Prokaryotic organisms retain the features of the most ancient times: they are very simple in structure. On this basis, they are singled out as an independent supra-kingdom.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.