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Is a circular double stranded DNA molecule that is capable of independent replication it usually occurs in bacteria?
Wiki User
∙ 11y ago
It's called a plasmid.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoPlasmid
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What bacteria is circular double-stranded DNA molecule that is capable of independent replication?
plasmid
The process of duplicating a DNA molecule?
replication
Teleomeres are unnecessary in bacteria because the DNA is circular?
Correct, because there is no end to the DNA molecule for telomeres to exist.
Does DNA replication start at only one place in the DNA?
What do you mean by one area? If by one area you mean does it start at one area then stop and continue on another area then no, DNA replication is continuous and when it takes place it is the most important thing going on in the cell. The cells resources are directed at this process * DNA replication means copying the entire DNA molecule, so it involves the entire molecule, but not all at the same time. In bacteria (prokaryotic cells) replication begins at one point in the molecule and continues all the way round the circular molecule.Beginning at just one place would take too long in eukaryotic cells; someone has calculated that our longest chromosomes would take about a fortnight to replicate, and we cannot wait that long! So replication begins at a number of sites along the length of the DNA molecule. At each replication site, as the DNA strands are separated there is a bulge in the molecule called a replication bubble. As replication proceeds these bubbles become longer, and eventually they merge into one another and the job is done.
Where does the Replication of DNA molecule happens?
It occurs in the nucleus during the S Phase.
What bacteria is circular double-stranded DNA molecule that is capable of independent replication?
plasmid
What is a small circular DNA molecule found naturally in some bacteria?
plasmid
What do you call a small circular DNA molecule that is located in some prokaryotic cells like bacteria?
Plasmid (main circular DNA molecule) and transposons (smaller DNA loops).
The process of duplicating a DNA molecule?
replication
Teleomeres are unnecessary in bacteria because the DNA is circular?
Correct, because there is no end to the DNA molecule for telomeres to exist.
What is the result of the replication of one molecule?
A duplicate molecule.
Does DNA replication start at only one place in the DNA?
What do you mean by one area? If by one area you mean does it start at one area then stop and continue on another area then no, DNA replication is continuous and when it takes place it is the most important thing going on in the cell. The cells resources are directed at this process * DNA replication means copying the entire DNA molecule, so it involves the entire molecule, but not all at the same time. In bacteria (prokaryotic cells) replication begins at one point in the molecule and continues all the way round the circular molecule.Beginning at just one place would take too long in eukaryotic cells; someone has calculated that our longest chromosomes would take about a fortnight to replicate, and we cannot wait that long! So replication begins at a number of sites along the length of the DNA molecule. At each replication site, as the DNA strands are separated there is a bulge in the molecule called a replication bubble. As replication proceeds these bubbles become longer, and eventually they merge into one another and the job is done.
How many chromosomes does a bacterium have?
Bacteria do not have chromosomes. They have a small circular piece of DNA within the cell. The chromosome of a bacterium is the single molecule of circular DNA. It is also called as nucleoid.
What is the small ring of DNA in bacteria?
Bacteria generally have one (and only one) circular chromosome. However, they can also contain smaller rings of DNA called plasmids. These plasmids are generally not essential to cellular functions, but serve a variety of purposes. For example, they can serve as cloning vectors.
Where does the Replication of DNA molecule happens?
It occurs in the nucleus during the S Phase.
Where does DNA replication begin-?
The DNA replication machinery initially assembles and begins replication at the origin of replication. It contains high levels of AT base pairs for easier unzipping and there's usually one per bacteria chromosome, several for archaea chromosome, and many many more for eukaryotic linear chromosomes.
Why prokaryote dna circular?
I am really not sure about the causality here - that is whether the following are answers to your question, or are merely results of the circular DNA structure. One possible answer is that this way the DNA has no telomere sequence and therefore the Haylfick limit does not apply - they can keep on dividing indefinitely. Also, the rolling cirlce replication of the DNA (which can only occur in a circular molecule) is a simpler mechanism than in eukaryotes. Sexual processes of bacteria, such as conjugation, also depend on the rolling-cirlce, mentioned above.
