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.
Bacteria. The Bacteria are considered as unicellular prokaryotic organisms. Unlike eukaryotes, bacteria cells lack an organized nucleus, mitochondria, chloroplasts and other membrane bounded organelles. Bacterial cell has only a circular DNA, which does not associate with histone protein.Bacteria do not show sexual reproduction methods.nlike eukaryotes, bacteria cells lack an organized nucleus, mitochondria, chloroplasts and other membrane bounded organelles. Bacterial cell has only a circular DNA, which does not associate with histone protein. Bacteria do not show sexual reproduction methods.
Amoebas have a nucleus and a food vacuole and reproduce by binary fission. Fungus-like protists are heterotrophs, meaning they need to eat other living things or once living things. Fungus-like protists can attack potato plants, corns, cabbages, and grapes.One type of fungus-like protists is slime mold.rotists, like monerans, are microscopic. Some examples are amoeba, paramecium, kelp, and diatom. Protists vary widely in shape, size, and form, and can be unicellular or multicellular. Protists are eukaryotic, meaning they have a nucleus and other structures in their cells, which are not found in prokaryotic cells.