What does nucleus mean?


A nucleus represents different things depending on the area of science being studied. In general, the nucleus is the center of an object and its most important part.

The nucleus exists in the fields of biology and physics. In biology, the nucleus represents the center of the cell, enclosed by a membrane, where DNA and genetic material is contained. In physics, the nucleus is the center of an atom containing protons and neutrons. A cell's nucleus is made of nucleoplasm and a nucleoprotein-rich network. Nucleus represents different things in chemistry, astronomy, meteorology, botany, and anatomy. For example, in astronomy, the nucleus refers to the center of the head of a comet or the brightest part of a nebula or galaxy.

1 Additional Answer
Ask.com Answer for: what does nucleus mean
[noo-klee-uhs, nyoo-]
a central part about which other parts are grouped or gathered; core: A few faithful friends formed the nucleus of the club.
Biology a specialized, usually spherical mass of protoplasm encased in a double membrane, and found in most living eukaryotic cells, directing their growth, metabolism, and reproduction, and functioning in the transmission of genic characters.
Physics. the positively charged mass within an atom, composed of neutrons and protons, and possessing most of the mass but occupying only a small fraction of the volume of the atom.
Anatomy a mass of nerve cells in the brain or spinal cord in which nerve fibers form connections.
Meteorology a particle upon which condensation of water vapor occurs to form water drops or ice crystals.
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Source: Dictionary.com
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