en

cell nucleus

1

Terminological databases

Loomakasvatuse terminibaas

ID 478749 Last modified 19.06.2023
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  • raku põhiosa, mis on ümbritsetud tuumamembraaniga, millel on kindel kuju, struktuur ja koostis ning sisaldab põhilise osa geneetilisest informatsioonist

Rakubioloogia terminibaas

ID 461523 Last modified 07.07.2023
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  • eukarüoodi rakus paiknev suur, membraaniga ümbritsetud organell, milles sisalduv DNA on vähemal või suuremal määral pakitud kromosoomidesse
  • In cell biology, the nucleus is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome and are structured in such a way to promote cell function. The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nuclear matrix (which includes the nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.
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  • Tuumas toimub RNA süntees ja selle edasine töötlemine ning ribosoomide alaühikute moodustumine.
cell nucleus

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