The nucleus contains nearly all of the cell's DNA, surrounded by a network of fibrous intermediate filaments and enveloped in a double membrane called the nuclear envelope. The nuclear envelope separates the fluid inside … 查看更多內容

Nuclear transport
The entry and exit of large molecules from the nucleus is tightly controlled by the nuclear pore … 查看更多內容

As the major defining characteristic of the eukaryotic cell, the nucleus' evolutionary origin has been the subject of much speculation. Four major hypotheses have been proposed … 查看更多內容

• Nucleus (neuroanatomy)
• Nucleoid
• Nucleomorph 查看更多內容

The nucleus provides a site for genetic transcription that is segregated from the location of translation in the cytoplasm, allowing levels of gene regulation that are not available to prokaryotes. The main function of the cell nucleus is to control gene expression and … 查看更多內容

Most eukaryotic cell types usually have a single nucleus, but some have no nuclei, while others have several. This can result from normal development, as in the maturation of mammalian red blood cells, or from faulty cell division.
Anucleated cells 查看更多內容

The nucleus was the first organelle to be discovered. What is most likely the oldest preserved drawing dates back to the early microscopist … 查看更多內容