Nucleus vs. Nucleoid

Nucleusnoun

The core, central part of something, around which other elements are assembled.

Nucleusnoun

An initial part or version that will receive additions.

Nucleusnoun

The massive, positively charged central part of an atom, made up of protons and neutrons.

Nucleusnoun

(cytology) A large membrane-enclosed organelle found in eukaryotic cells which contains genetic material.

Nucleusnoun

(neuroanatomy) A ganglion, cluster of many neuronal bodies where synapsing occurs.

Nucleusnoun

The central part of a syllable, most commonly a vowel.

Nucleusnoun

A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; - used both literally and figuratively.

Nucleusnoun

The body or the head of a comet.

Nucleusnoun

An incipient ovule of soft cellular tissue.

Nucleusnoun

A body, usually spheroidal, in a eukaryotic cell, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents, which contains the chromosomal genetic material, including the chromosomal DNA. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.

Nucleusnoun

The tip, or earliest part, of a univalve or bivalve shell.

Nucleusnoun

a part of the cell containing DNA and RNA and responsible for growth and reproduction

Nucleusnoun

the positively charged dense center of an atom

Nucleusnoun

a small group of indispensable persons or things;

Nucleusnoun

(astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail

Nucleusnoun

any histologically identifiable mass of neural cell bodies in the brain or spinal cord

Nucleoidnoun

(microbiology) The irregularly-shaped region within a prokaryote cell where the genetic material is localized

Nucleoid

The nucleoid (meaning nucleus-like) is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material. The chromosome of a prokaryote is circular, and its length is very large compared to the cell dimensions needing it to be compacted in order to fit.