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nucleolus

n. 核,细胞核,核仁

核,细胞核,核仁

WordNet (r) 3.0 (2006) (WordNet)

nucleolus
n 1: a small round body of protein in a cell nucleus; such
organelles contain RNA and are involved in protein
synthesis [synonym: {nucleolus}, {nucleole}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Nucleolus \Nu*cle"o*lus\, n.; pl. {Nucleoli}. [L., a little nut,
dim. of nucleus.]
1. A little nucleus.
[1913 Webster]

2. (Biol.) A small rounded body contained in the nucleus of a
cell or a protozoan.
[1913 Webster]

Note: It was termed by Agassiz the entoblast. In the
protozoa, where it may be situated on one side of the
nucleus, it is sometimes called the endoplastule, and
is supposed to be concerned in the male part of the
reproductive process. See {Nucleus}.
[1913 Webster]

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Nucleolus - Wikipedia
It is best known as the site of ribosome biogenesis The nucleolus also participates in the formation of signal recognition particles and plays a role in the cell's response to stress [2] Nucleoli are made of proteins, DNA and RNA, and form around specific chromosomal regions called nucleolar organizing regions
Nucleolus | Definition, Function, Ribosome, rRNA, Structure, Facts . . .
Inside the nucleus is a syrupy nucleoplasm that contains the threadlike chromatin, which contains the cell's DNA, and at least one nucleolus, the site of rRNA production
Nucleolus - Definition, Structure, Function
Nucleolus Definition The nucleolus is a dense, spherical, membrane-less structure found within the nucleus of eukaryotic cells It is the site where ribosomal RNA (rRNA) transcription, processing, and ribosome subunit assembly occur
Nucleolus – Definition, Location, Structure, Functions, Picture
The nucleolus (plural: nucleoli) is described as a large, round body located inside the matrix of the nucleus of a eukaryotic cell It is membrane-less and is made up of RNA and proteins The nucleolus is more prominently seen in an interphase nucleus
The Nucleolus: Structure and Function - PMC
The nucleolus is the largest nuclear organelle and is the primary site of ribosome subunit biogenesis in eukaryotic cells It is assembled around arrays of ribosomal DNA genes, forming specific chromosomal features known as nucleolar organizing
Nucleolus: Structure, Diagram its Function - GeeksforGeeks
What is Nucleolus? The nucleolus is a membrane-free cellular structure found within the nucleus of eukaryotic cells that is largely responsible for the production and assembly of ribosomes, the cellular machinery for protein synthesis
The Role of the Nucleolus in Ribosome Production
The nucleolus is a dense, spherical region found within the nucleus of eukaryotic cells Though prominent under a light microscope, it is not surrounded by a lipid membrane, unlike most organelles
Structure of the Nucleolus - BYJUS
The nucleolus is the distinct structure present in the nucleus of eukaryotic cells Primarily, it participates in assembling the ribosomes, alteration of transfer RNA and sensing cellular stress The nucleolus is composed of RNA and proteins, which form around specific chromosomal regions

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