NUCLEOID Meaning and
Definition
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Nucleoid is a term commonly used in biology to describe the region within a bacterial cell where the genetic material is located. It is equivalent to the nucleus found in eukaryotic cells, but lacks a membrane. The nucleoid is composed of a single, circular strand of DNA called the bacterial chromosome, which contains all the genetic information required for the cell's survival and reproduction.
The nucleoid is located in the cytoplasm of the bacterial cell and is typically found near the center of the cell. It is a compacted and organized structure that is not physically separated from the rest of the cytoplasm. However, it can be differentiated from the surrounding cytoplasm due to its dense concentration of genetic material.
Within the nucleoid, the DNA molecule is highly coiled and supercoiled to fit into the small space. This compact packaging allows the cell to efficiently store and access its genetic information. In addition to the bacterial chromosome, the nucleoid may also contain plasmids, which are small, circular DNA molecules that can be transferred between bacterial cells.
The nucleoid plays a crucial role in the replication and transcription of the bacterial genome. It serves as a central hub where DNA replication and gene expression occur, ensuring the expression of the appropriate genes at the appropriate times to maintain cellular function and respond to environmental changes.
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1. Nucleiform. 2. Inclusion body, the granular substance of the erythrocyte supposed to be the remains of the nucleus of the erythroblast.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for NUCLEOID
Etymology of NUCLEOID
The word "nucleoid" is derived from the combination of two different terms: "nucleus" and "oid".
1. "Nucleus" comes from the Latin word "nuculeus", which means "kernel" or "small nut". It referred to the central core or central part of something.
2. The suffix "-oid" is derived from the Greek word "-oeidēs", meaning "resembling" or "having the form or shape of". It is commonly used to indicate a resemblance to something specific.
When these two elements are combined, "nucleoid" is formed, which essentially means "resembling a nucleus" or "having the form or shape of a nucleus". This term is often used in biology to describe the central region of prokaryotic cells that contains the genetic material but lacks a typical membrane-bound nucleus found in eukaryotic cells.
Similar spelling words for NUCLEOID
- nickled,
- niocalite,
- Nikoleta,
- Nikoletta,
- Cor/niculate,
- nucleid,
- nicoleta,
- Nicollette,
- nickelled,
- nucleate,
- nucleotide,
- Nicolet,
- Niccolite,
- http://www.nwguild.org,
- nickeled,
- NWGLDE,
- Niggled,
- Nicoletta,
- nucleated,
- nuculidae,
- white-knuckled,
- niklot,
- bare-knuckled,
- nucleide,
- nagold,
- nuclide,
- Nikkolette,
- necklet,
- Nicollet,
- nigglet,
- Knuckled,
- nahcolite,
- Nicolette,
- neckhold,
- nicoletti.
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