The function of the ribosome is protein synthesis. The endoplasmic reticulum connects all cellular structures into a single system. The function of the Golgi Complex is the transport of substances. Lysosomes are involved in intracellular digestion, i.e. splitting large molecules. Mitochondria synthesize ATP molecules. There are also plastids that have different functions. The function of ribosomes is the synthesis of polypeptide chains (the second stage of protein synthesis is translation). The cell center defines the poles of the dividing cell. The cell nucleus contains hereditary information.
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.