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During DNA replication DNA polymerase lands at origination sites and forms?
Wiki User
∙ 9y ago
DNA polymerase is instrumental in DNA elongation as it catalyzes the addition of deoxyribonucleoside triphosphates to the 3 prime end hydroxyl group of the DNA chain. DNA polymerase binds on the origin of replication, and forms a pre-replication complex with other proteins. The replication complex unwinds DNA during replication
Wiki User
∙ 9y ago
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Difference between DNA replication and transcription?
1. Replication is the duplication of two-strands of DNA. Transcription is the formation of single, identical RNA from the two-stranded DNA. 2. There are different proteins involved in replication and transcription. 3. In replication, the end result is two daughter cells, while in transcription, the end result is a protein molecule. 4. In transcription, DNA serves as the template for RNA synthesis.
What type of DNA molecule forms as a result o DNA replication?
During DNA replication the two strands of the DNA helix split apart and the ribosome reads off the template strand producing an exact copy of this strand. Then RNA polymerase base pairs both of the strands, producing 2 semi-conservative strands.
Explain the function of replication?
DNA replication requires the opening of the 'zipped up' DNA strand. This is so a 'new' strand of DNA can be inserted and have a template strand to 'read' off. DNA polymerase analyses the bases on the template strand and adds each complementary base to synthesise the 'new' strand. In order for DNA polymerase to be able to do this the DNA has to be opened up by helicase to reveal the bases of the template strand. The unzipping of the DNA by helicase forms the replication fork. Thus the function of the replication fork is to reveal template strands for DNA replication to actually occur.
Is DNA helicase an enzyme?
Yes, it unwinds the DNA double helix prior to transcription/protein synthesis and DNA replication.
How many strands are replicated in DNA replication?
Two - the leading strand and the lagging strand.
Difference between DNA replication and transcription?
1. Replication is the duplication of two-strands of DNA. Transcription is the formation of single, identical RNA from the two-stranded DNA. 2. There are different proteins involved in replication and transcription. 3. In replication, the end result is two daughter cells, while in transcription, the end result is a protein molecule. 4. In transcription, DNA serves as the template for RNA synthesis.
What type of DNA molecule forms as a result o DNA replication?
During DNA replication the two strands of the DNA helix split apart and the ribosome reads off the template strand producing an exact copy of this strand. Then RNA polymerase base pairs both of the strands, producing 2 semi-conservative strands.
Why DNA replication is popularly known as enzyme dependent?
DNA replication is aided by enzymes. Without the enzymes DNA will not be able to replicate.There are three main enzymes involved-Helicase - This enzyme separates the two parental DNADNA Polymerase - This enzyme exists in different forms and each one of them have a specific function in the replication of DNA.In short, it enhances each strands, adds base pairs and repairs any damage done to the strands during the replication process.Ligase - This enzyme puts the two stands together after the replication is complete.
How does DNA replication differ in prokaryotes and eukaryotes?
1. In eukaryotic cells replication forks make several start sites along the DNA strand which forms replication "bubbles" which get larger the more DNA is copied, and stop when DNA replication is complete. In prokaryotic cell's DNA is formed in a loop, two replication forks start along one part of the loop (origin replication) and the replication forks copy DNA in opposite directions until they meet at the other side of the loop, making an exact copy of DNA.
Explain the function of replication?
DNA replication requires the opening of the 'zipped up' DNA strand. This is so a 'new' strand of DNA can be inserted and have a template strand to 'read' off. DNA polymerase analyses the bases on the template strand and adds each complementary base to synthesise the 'new' strand. In order for DNA polymerase to be able to do this the DNA has to be opened up by helicase to reveal the bases of the template strand. The unzipping of the DNA by helicase forms the replication fork. Thus the function of the replication fork is to reveal template strands for DNA replication to actually occur.
What are the short segments produced in the formation of the 3'-5' strand of DNA called?
During DNA replication, the lagging strand is replicated ~1000 (E. coli) base pairs at a time, forming numerous "Okazaki fragments".Okazaki fragments form because polymerase is only able to replicate DNA in one direction, but DNA is double stranded, with the strands running anti parallel (in opposite directions). The polymerase waits for a region of DNA to be unwound, and while the leading strand is replicated continuously, on the lagging strand the polymerase waits until a region of single stranded DNA is produced before replicating it. This discontinous replication forms the Okazaki fragments, which can then be joined together by ligase (although a different polymerase enzyme, pol I in E. coli, is needed as well to replace the RNA primers with DNA).
Is DNA helicase an enzyme?
Yes, it unwinds the DNA double helix prior to transcription/protein synthesis and DNA replication.
How many strands are replicated in DNA replication?
Two - the leading strand and the lagging strand.
Which structure forms as DNA unwind?
A replication bubble.
What happens at the DNA replication fork?
The DNA replication fork is where the replication origin forms the Y shape. The replication fork moves down the DNA strand to the strand's end, resulting in every replication fork having a twin.
What is the importance of DNA replication?
forms your protein either if your normal or not~ :D
What happens first at each origin of a replication?
The enzyme that catalyzes DNA replication is DNA Polymerase. ... This enzyme first binds to a specific site on the DNA known as the origin of ... a single origin on their chromosome while eukaryotes have several on each of ... This is similar to what happens when your coiled telephone cord gets overwound and forms knots.
