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The nucleoid (meaning nucleus-like) is an irregularly-shaped region within the cell of prokaryotes which has nuclear material without a nuclear membrane and where the genetic material is localized. The genome of prokaryotic organisms generally is a circular, double-stranded piece of DNA, of which multiple copies may exist at any time. The length of a genome widely varies, but generally is at least a few million base pairs. Storage of the genome within a nucleoid can be contrasted against that within eukaryotes, where the genome is packed into chromatin and sequestered within a membrane-enclosed organelle called the nucleus.

A genophore is the DNA of a prokaryote. This is commonly referred to as a prokaryotic chromosome. The term chromosome is misleading for a genophore because the genophore lacks chromatin. The genophore is compacted through a mechanism known as supercoiling, whereas a chromosome is compacted via chromatin. The genophore is circular in most prokaryotes, and linear in very few. The circular nature of the genophore allows replication to occur without telomeres. Genophores are generally of a much smaller size than Eukaryotic chromosomes. A genophore of a true organism can be as small as 580,073 base pairs (Mycoplasma genitalium). Many eukaryotes (such as plants and animals) carry genophores in organelles such as mitochondria and chloroplasts. These organelles are very similar to true prokaryotes.

VisualizationThe nucleoid can be clearly visualized on an electron micrograph at high magnification, where, although its appearance may differ, it is clearly visible against the cytosol. Sometimes even strands of what is thought to be DNA are visible. By staining with the Feulgen stain, which specifically stains DNA, the nucleoid can also be seen under a light microscope. The DNA-intercalating stains DAPI and ethidium bromide are widely used for fluorescence microscopy of nucleoids. CompositionExperimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome. Proteins helping to maintain the supercoiled structure of the nucleic acid are known as nucleoid proteinsor nucleoid-associated proteins and are distinct from histones of eukaryotic nuclei. In contrast to histones, the DNA-binding proteins of the nucleoid do not form nucleosomes, in which DNA is wrapped around a protein core. Instead, these proteins often use other mechanisms to promote compaction such as DNA bending or DNA-DNA bridging.
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Cellular structure not bound by membrane?

Nucleoid


The structure that contains the genetic information in a bacterial cell is called the?

The structure that contains genetic information in a bacterial cell is called the nucleoid. It is not surrounded by a nuclear membrane like in eukaryotic cells but contains the cell's DNA in a region of the cytoplasm.


The cytoplasmic structure in a bacterial cell is the a. cell wall b. nucleoid c. plasma membrane d. ribosomes?

b-nucleoid


How does a nucleoid look like?

A nucleoid is a distinct region within a prokaryotic cell where the genetic material (DNA) is located. It does not have a membrane separating it from the rest of the cell, so it does not have a specific structure like a nucleus in eukaryotic cells. Instead, the DNA is organized and condensed within the nucleoid region.


Largest artery in your body and it funstion?

the aorta.


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Removes toxins from the body.


How do you call funstion through pointers?

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Does every cell have a nucleoid?

no every cell do not have a nucleoid.


What is the connection of nucleoid?

What is the function of the nucleoid in a cellRead more: What_is_the_function_of_the_nucleoid_in_a_cell


What are the similarities between prokaryotic nucleoid and eukaryotic nucleus?

The eukaryotic cell is a sturcture that is the main control OS the cell. It contains DNA chromosomes. The proaryotic nucleoid is not actual a "structure", because there are no organelles with enclosed membranes, more of an area where most of the DNA is located.


What is the difference between a nucleoid and a plasmid in terms of their structure and function within a bacterial cell?

A nucleoid is the region in a bacterial cell where the genetic material (DNA) is located, while a plasmid is a small, circular piece of DNA that can replicate independently of the bacterial chromosome. The nucleoid contains the main genetic material of the cell, while plasmids often carry additional genes that can provide advantages to the cell, such as antibiotic resistance.


Does the cat have an appendix like human does?

Probably, but the appendix serves little funstion anyway.