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The cytoplasm contains the cytoskeleton, a network of protein filaments found in all cells, while the nucleoplasm is believed to contain the nuclear matrix, a hypothetically analogous network of filaments that organizes the organelles and genetic information within the nucleus. While the structure and function of the cytoskeleton have been well ...
The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells , have no nuclei , and a few others including osteoclasts have many .
Cell nucleus: A cell's information center, the cell nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes , and is the place where almost all DNA replication and RNA synthesis ( transcription ) occur.
The number varies in different types of cells and over the cell cycle. Maximum number is reached in mid G 1 phase and towards G 2 they become larger and their number decreases. CBs disassemble during the M phase and reappear again later in G 1 phase. Cajal bodies are possibly sites of assembly or modification of the transcription machinery of ...
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NESs serve several vital cellular functions. They assist in regulating the position of proteins within the cell. Through this NESs affect transcription and several other nuclear functions that are essential to proper cell function. [1] The export of many types of RNA from the nucleus is required for proper cellular function.
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An organelle within the nucleus of eukaryotic cells which is composed of proteins, DNA, and RNA and serves as the site of ribosome synthesis. nucleoplasm. Also karyoplasm. All of the material enclosed within the nucleus of a cell by the nuclear envelope, analogous to the cytoplasm enclosed by the main cell membrane.