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nucleus, in biology, a specialized structure occurring in most cells (except bacteria and blue-green algae) and separated from the rest of the cell by a double layer, the nuclear membrane.
The meaning of NUCLEUS is the small bright body in the head of a comet. How to use nucleus in a sentence.
The nucleus is a large, membrane-bound organelle in eukaryotic cells that contains the cell’s genetic material in the form of DNA. Its primary role is to regulate gene expression, mediate replication, and coordinate cell activities like growth and metabolism.
Cell Nucleus Definition. The cell nucleus is a large organelle in eukaryotic organisms which protects the majority of the DNA within each cell. The nucleus also produces the necessary precursors for protein synthesis.
noun. a central or fundamental part or thing around which others are grouped; core. a centre of growth or development; basis; kernel. the nucleus of an idea.
Nucleus is a membrane-bound organelle that houses DNA, the genetic material of a eukaryotic cell whereas nucleolus is a sub-organelle found within the nucleus containing RNA and is responsible for ribosome synthesis.
A nucleus is a large double-membraned organelle that is sometimes referred to as the “central unit” of the cell because it contains the chromosomes that bear the genetic material. It is not found only in eukaryotic cells and not in prokaryotic cells.
NUCLEUS definition: 1. the central part of an atom, usually made up of protons and neutrons 2. the part of a cell that…. Learn more.
The cell nucleus is a membrane-bound structure that contains a cell's hereditary information and controls its growth and reproduction. It is the command center of a eukaryotic cell and is usually the most notable cell organelle in both size and function.
NUCLEUS meaning: 1. the central part of an atom, usually made up of protons and neutrons 2. the part of a cell that…. Learn more.