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Q: A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 183 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.220-kg tumor, which receives a biologically equivalent dose of 153 rem.
Components in a nucleus [edit]. The cell nucleus is an important organelle because it is where genes and their controlling factors are formed. In order to do so, it needs the helps of the stored components: 1  Chromosomes: store and organize genes that allow cell division.2  Nuclear pores: transport regulatory factos and gene products.he cell nucleus is an important organelle because it is where genes and their controlling factors are formed. In order to do so, it needs the helps of the stored components: 1  Chromosomes: store and organize genes that allow cell division.