cell nucleus(redirected from Nucleus biology)
Also found in: Thesaurus, Encyclopedia.
Switch to new thesaurus
|Noun||1.||cell nucleus - a part of the cell containing DNA and RNA and responsible for growth and reproduction|
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
pronucleus - the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote
nucleole, nucleolus - a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
chromatin, chromatin granule - the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes
achromatin - the part of a cell nucleus that is relatively uncolored by stains or dyes
linin - an obsolete term for the network of viscous material in the cell nucleus on which the chromatin granules were thought to be suspended
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
cell organ, cell organelle, organelle - a specialized part of a cell; analogous to an organ; "the first organelle to be identified was the nucleus"
subthalamic nucleus - an oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate body