Nucleus | Definition, Function, Structure, & Facts | Britannica
The nucleus, in biology, is a specialized structure occurring in eukaryotic cells and separated from the rest of the cell by a nuclear membrane. The nucleus contains the cell’s genetic material and controls and regulates its activities, including metabolism and cell division.

Cell nucleus - Wikipedia
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Cell Nucleus - Definition, Structure, Function
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.

Atomic nucleus - Wikipedia
Almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. Protons and neutrons are bound together to form a nucleus by the nuclear force.

Nucleus: Definition, Structure, Parts, Functions, Diagram
The nucleus is the organelle that houses chromosomes. Chromosomes consist of DNA, which contains heredity information and instructions for cell growth, development, and reproduction.

Log in | Nucleus LMS
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Nucleus - National Human Genome Research Institute
The nucleus is one of the most obvious parts of the cell when you look at a picture of the cell. It's in the middle of the cell, and the nucleus contains all of the cell's chromosomes, which encode the genetic material.

Cell Nucleus: Definition, Structure, & Function, with Diagram
It is the most important and defining feature of all higher organisms, including plant and animal cells, whose main function is to control and coordinate the functioning of the entire cell. The word ‘nucleus’ (plural: nuclei) is derived from the Latin word ‘ nucleus ‘, meaning ‘kernel’ or ‘seed’.

NUCLEUS Definition & Meaning - Merriam-Webster
The meaning of NUCLEUS is the small bright body in the head of a comet. How to use nucleus in a sentence.

Nucleus - GeeksforGeeks
The nucleus is a double membrane-bound organelle that contains the cell's genetic material in the form of DNA, which is organised into structures called chromosomes.