The region of the eukaryotic nucleus in which rRNA transcription occurs.
DIAGRAM: Nucleus / Cytoplasm or Cytosol PHOTO
Structure in the nucleus where ribosomal RNA is transcribed and ribosomal subunits are assembled.
A discrete region of the nucleus created by the transcription of rRNA genes. The nucleolus disappears during mitosis, or cell division.
a dense protoplasmic body within the nucleus having a high rna content; the site of ribosomal rna synthesis.
pl. nucleoli: any of the small, dense cell structures made up mostly of RNA ( ribonucleic acid)
this structure is found in the nucleus and is the site of RNA synthesis
a structure within the nucleus that contain a bunch of protein and RNA gather together into ribosomes.
A structure within the nucleus containing RNA
nucleolus, a small nucleus) An RNA-rich intranuclear organelle in the nucleus of eukaryotic cells, produced by a nucleolar organizer. It represents the storage place for ribosomes and ribosome precursors. The nucleolus consists primarily of ribosomal precursor RNA, ribosomal RNA, their associated proteins, and some, perhaps all, of the enzymatic equipment (RNA polymerase, RNA methylase, RNA cleavage enzymes) required for synthesis, conversion and assembly of ribosomes. Subsequently the ribosomes are transported to the cytoplasm.
An intranuclear pale blue body, surrounded: by a dense condensation of chromatin.
( NU-CLAE-OH- LUS) THE SMALL DENSE MASS OR MASSES OF GRANULAR FIBRYLS IN THE NUCLEUS OF LIVING CELLS, THAT CONTAIN OUR GENETIC PROGRAMING PLURAL= NUCLEOLI
The dense region in the nucleus that is the site of RNA synthesis.
(new klee´ oh lus) [from L. diminutive of nux: little kernel or little nut] • A small, generally spherical body found within the nucleus of eukaryotic cells. The site of synthesis of ribosomal RNA.
A dense, spherical body inside the nucleus of a cell. The nucleolus makes the RNA that is a structural component of the ribosomes.
a small round body of protein in a cell nucleus; nucleoli contain RNA and are involved in protein synthesis
a condensed mass of chromatin (DNA-type material) within the nucleus of a cell
a densely-stained structure in the nucleus where ribosome subunits are assembled
a somewhat rounded, dense region within the nucleus that lacks a surrounding membrane
new-KLEE-o-lis A structure within the nucleus where RNA nucleotides are stored. 71
(noo-KLEE-o-luhs) A spherical body within the nucleus of a cell that is not bound by a plasma membrane, which functions in the storage of ribosomal RNA.
Nuclear body that is the site of ribosomal RNA synthesis.
A small body of deeply-staining substances found within the nucleus of nerve cells and of other cells.
(plural, nucleoli) A specialized structure in the nucleus, formed from various chromosomes and active in the synthesis of ribosomes.
A deeply staining body within the nucleus of a cell and containing RNA; nucleoli are specialized portions of certain chromosomes that carry multiple copies of the information to synthesize ribosomal RNA.
A round or oval body in the nucleus of a eukaryotic cell; consists of DNA and RNA and produces ribosomal RNA (pl.: nucleoli). PICTURE
spherical structure within the nucleus that contains RNA
Contains genes that direct synthesis of ribosomal RNA.
the site in the nucleus where ribosomal RNAs are transcribed and processed and ribosomes are assembled.
The darker region within the nucleolus where ribosomal subunits are manufactured.
an organelle within the nucleus - it is where ribosomal RNA is produced. Some cells have more than one nucleolus.
The globular nuclear organelle formed at the nucleolar organizer. Site of ribosome construction. An organelle found in the nucleus, containing rRNA and multiple copies of the genes coding for rRNA.
a specialized structure within the nucleus formed by various chromosomes. It is active in the synthesis of ribosomes.
a sphere-shaped body in the cell nucleus that becomes enlarged during the manufacture of proteins, is associated with a particular part of a chromosome, and is rich in RNA
(n) A rounded body within the cell nucleus that takes the same stain as chromosomes
The nucleolus is a spherical or ovoid organelle in the nucleus of a eukaryotic cell. It consists of granules of DNA and RNA, and synthesizes ribosomal RNA. The plural of nucleolus is nucleoli.
a nonmembranous spherical body within the nucleus; composed of protein, DNA, and RNA; it functions in the synthesis and storage of ribosomal RNA
A darkly staining part of the nucleus that is the site for the processing of rRNAs and their assembly into ribosomes.
Large structure in the nucleus of eukaryotic cells where rRNA synthesis and processing occurs and ribosome subunits are assembled.
Region in the nucleus of a cell where ribosomal RNA production occurs
Large sphere shaped organelle visible in interphase eukaryotic cells with the use of a light microscope.
In cell biology, the nucleolus (plural nucleoli) is a "sub-organelle" of the cell nucleus, which is an organelle. A main function of the nucleolus is the production and assembly of ribosome components. The nucleolus is roughly spherical, and is surrounded by a layer of condensed chromatin.