How are viruses different from all other organisms?

1) Viruses do not have a cellular structure. It is a non-cellular life form.
2) Viruses are intracellular parasites and can reproduce only in the cell of another organism.
3) Viruses contain one type of nucleic acid – DNA or RNA.

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.