This article provides information about the Chemical Composition of Nucleus! The nucleus contains mainly nucleoproteins composed of nucleic acid and proteins, besides enzymes and inorganic salts. The following is the percentage of different components of nucleus of mammalian liver cells in interphase, determined by spectrophotometric analysis: DNA 9% Residual protein 14% RNA 1% other acidic proteins 65% Histone protein 11% [...]
The nucleus consists of the following main parts: (1) Nucleolemma or nuclear membrane (karyotheca) (2) Nuclear sap or karyolymph or nucleoplasm (3) Chromatin network or fibres (4) Nucleolus (5) Endosomes. [I] Nuclear membrane (karyotheca): The nucleus is separated from the cytoplasm by a limiting membrane called as karyotheca or nuclear membrane. This membrane plays an important role for the transport [...]
This article provides information about the Position and Morphology of Nucleus! Nucleus (L., nux, nut) is the most important part of the cell situated in the cytoplasm. All the cellular activities are controlled by it. Nucleus is a directing and organizing unit without which the cell could not exist. It was discovered by Robert Brown (1831) in flowering plants and [...]
