Indicate the fundamental difference in the structure of ribosomes and mitochondria.

Ribosomes consist of two subunits and do not have a membrane structure, and mitochondria have a two-membrane structure and are not subdivided into subunits.

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.