What forms of life occupy an intermediate position between the bodies of animate and inanimate nature?

Viruses are intermediate forms of life between animate and inanimate nature. They have features characteristic of both living nature and the properties of inanimate. Viruses show signs of living organisms only when they are in a cell. Outside the cell, they are not capable of growth and reproduction, do not have a cellular structure, can contain only one type of nucleic acid (the so-called DNA or RNA viruses), they cannot generate energy on their own in order to carry out the basic life processes: respiration, digestion, excretion of products exchange. Therefore, viruses are intracellular parasites.