Is Prokaryotic DNA a double Helix: Why, How and Detailed Insights

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The prokaryotes are referred to the organism that has no specific nucleus and no rest number of organelles with inside membranes.

With concern to the response for is prokaryotic DNA a double helix, the reply to it is yes. The DNA of all the prokaryotes that includes the bacteria and the archaea is circular in their structure and is double stranded.

Just not similar to that of the eukaryotes, these are the structures having no specific region or are boundary less and have a double stranded DNA being circular and are smaller than that of the DNA of the eukaryotes in their cell. There is a formation of a loop in the prokaryotes which is the plasmids and is of no specific use in the cell growth.

The molecule of the DNA can be long and get stretched where the DNA in the cell of a human may be of length of 2m. Thus, the cell DNA need to be packed in such a way that it can be fitted in the cell and function inside its boundary and shall not be seen with naked eyes.

There is also a presence of a second type of nucleic acid called the ribonucleic acid. Just like the DNA, RNA is also a polymer of the nucleotides. Each of these is made up of the nitrogenous base with a phosphate group and also a five carbon one called the ribose.

Cell arrangement to prove is prokaryotic DNA a double helix

DNA is referred to as the deoxyribose nucleic acid and is the concerned molecule that works and gets replicated.

The model for the DNA suggests that prokaryotic DNA is a double helix which is double helix was given by Watson and Crick where the DNA is a polymer of the nucleotides. Each of the nucleotides includes the nitrogen bases and is made of two strands.

There are two of the purines which are adenine and guanine, the two of the pyrimidine which are the thymine and cytosine. Along with the composition of nitrogenous bases they also have a phosphate group and a five carbon sugar called the deoxyribose.

Each of the DNA stand is made up of nucleotide bonds attached together which are covalent in between the phosphate group of the one and the deoxyribose of the next sugar seen. This is the actual backbone for the DNA and here is the base extension point. The prokaryotes have cytoplasm, ribosomes, cell wall, flagella and cell membrane.

The strand having one of the bases does get to bond with the base of the strand that comes second along with the hydrogen bonds. Adenine always gets to bond with thymine then with cytosine and then gets to bond with guanine. Most prokaryotes have circular, single chromosome placed beside nucleoid.

It gets into the part of duplication when the cell is ready to get divided and shall read in order to generate the molecules like that of proteins to let the functions of the cell be carried out smooth. This is the absolute reason for the DNA getting to be packed and let protected in many ways. The genome is made of double stranded DNA ns is single in form of a circle.

is prokaryotic dna a double helix
Image credit- DNA –Wikipedia

Why is prokaryotic DNA a double helix?

The prokaryotes are seen with a single chromosome which is circular and is double stranded. The DNA of the prokaryotes are free floating and not in the nucleus.

With response to is prokaryotic DNA a double helix, The adenine always gets to bond with thymine and cytosine gets to pair with guanine. This is the cause that makes two of the strands to become spiral around each of them in a shape that forms the double helix.

With the reply to is prokaryotic DNA a double helix they have a chromosome that covers the area of the cytoplasm known as the nucleoid and is single being circular. They are also seen to be made up of tiny rings that look like the double stranded chromosomal DNA that are extra and are called plasmids. 

The eukaryotes have the one with being linear packed up in the chromosomes. The helix of DNA is enclosed around the proteins to make the nucleosomes. The coils of proteins and made to coil up and during division the chromosomes are seen to be coiled up more to help in movement.

The chromosomes of the prokaryotes are likely to have two specific areas that shall separate them by reflecting certain degrees of packing, staining, and then getting to determine if the DNA in any of the area is being euchromatin (expressed) or heterochromatin (not expressed). Some of the prokaryotes make loops called plasmids which are not useful for any normal growth of cell.

The DNA of the prokaryotes seems to be circular for the circular DNA did evolve at the first even before the linear eukaryotic DNA. This is also for the prokaryotes were one among the common ancestors that descended with circle polymerase and getting to replicate DNA in circle. Thus, the part of answer for is prokaryotic DNA a double helix or not, its an yes.

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