Why a mastectomy may be necessary. A mastectomy is mainly used as a treatment for breast cancer or to reduce the risk of breast cancer developing. Although breast cancer in men is much rarer than female breast cancer, it can also be treated with a mastectomy. Treating breast cancer.
Confidence votes 54. Protists are different from bacteria and archaea as protists, that have nuclei and can be multicellular, as from bacteria and archaea, that has no nuclei and is unicellular.acteria are pr â¦ okaryotic, and do not have nuclei. Also, protists are sort of like the miscellaneous category. There are plantlike cells (such as diatoms) and animal-like cells (such as ameoba). Bacteria and protists also have different shapes to their cells and different organelles.
There are three domains, two of which, Eubacteria and Archaea, are composed entirely of prokaryotic organisms; the third domain, Eucarya, encompasses all other (eukaryotic) life forms, including the single-cell and multicellular protists, as well as animals, green plants, and fungi.