A large terrestrial or aquatic ecosystem characterized by distinctive kinds of plants and animals and maintained by a distinct climate and soil conditions. Such as the desert biome is characterized by low annual rainfall, high rate of evaporation, resulting in dry environmental conditions. Special adaptations allow organisms to survive in this condition. Other examples of [...]
1. Changes in glycosidation of lipids and proteins: The Golgi complex plays a central role in the biosynthesis of gangliosides and other glycosphingo lipids. There is evidence that in cancer cells, there are surface membrane changes that involve a loss of glycosphingo lipids and these alterations are due to the reduction of one or more [...]
1. Immortalization of cancer cell: Cancer cells are characterized by immortalization; they overcome apoptosis by altering the genes that control such death of the cell. Genetic expressions of certain genes make the malignant cells immortal. These two genes are oncogenes and tumor suppressor gene. Actually activation of protooncogene and inactivation of tumor suppressor genes both [...]
1. The tumor cells are much rounded in shape compared to normal cells. 2. Mitochondrial size is said to be smaller in cancer cells than the normal. In cancer cells, the alternation is extremely frequent mitochondrial swelling and it appears denser. Some granules are smaller than mitochondria, termed as growth granules, which are found only [...]
Cancer cells are defined by two heritable properties: they and their progeny (i) reproduce in defiance of the normal restraints on cell division and (2) invade and colonize territories normally reserved for other cells. The controlling mechanism in the cell proliferation is maintained by a chain of events. Very occasionally, this control breaks down. A [...]
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