Indicate signs common to all cells. Explain the properties of living matter that all cells share in common.

All cells are surrounded by a membrane, their genetic information is stored in genes, proteins are their main structural material and biocatalysts, they are synthesized on ribosomes, and ATP is used as a source of energy. All cells are open systems. They are characterized by growth and development, reproduction and irritability.

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.