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DNA polimerase also acts as a correction mecanism for the strands it helps assemble.
What else can I help you with?
What surprised you about the process of DNA replication and protein synthesis?
One surprising aspect of DNA replication is the accuracy of the process, with very few errors occurring. In protein synthesis, the complexity and precision of the steps involved in translating the genetic code into functional proteins is also remarkable.
Why is the replication process is a source of few mutations?
Some mutations are due to errors in DNA replication. During the replication process, DNA polymerase chooses complementary nucleotide triphosphates from the cellular pool. Then the nucleotide triphosphate is converted to a nucleotide monophosphate and aligned with the template nucleotide. A mismatched nucleotide slips through this selection process only onece per 100,000 base pairs at most. The mismatched nucleotide causes a pause in replication, during which it is excised from the daughter strand and replaced with the correct nucleotide. After this so-called proofreading has occurred, the error rate is only one per 1 billion base pairs.
What binds to the prokaryotic chromosome to start DNA replication?
In prokaryotes, the DNA replication process is initiated by the binding of the DnaA protein to specific sites on the bacterial chromosome called DnaA boxes. DnaA protein helps in unwinding the DNA strands to enable replication to start.
What enzyme directs DNA replication?
the chains are first separated by enzymes called helicases.the helicase enzymes move along the DNA molecule and break the hydrogen bonds between the complementary bases separating the chains. then another enzyme called DNA polymerases comes and separates them even more creating new DNA molecules with new DNA and old DNA.
What enzyme catalyzes DNA replication?
one of them is heliocase. it 'unzips' the DNA strand. You can always remember this because it's in a popular joke: Q. Why is the enzyme heliocase a lot like a teenage boy? A. They both want to unzip your jeans (genes) !!!!!
Who performed the classic experiments that proved DNA was copied by semiconservative replication?
Watson and Crick mentioned it slightly in their paper but didn't propose a full method of replication. a number of different people collaborated to work out the full model of replication which is still no totaly finished, (few proteins left to find)
Are nucleoside analogs that inhibit DNA synthesis effective against viral diseases?
Yes, nucleoside analogs that inhibit DNA synthesis are effective against viral diseases because they can interfere with viral replication by disrupting the synthesis of viral DNA. These analogs can be incorporated into viral DNA, causing errors in replication and ultimately inhibiting viral replication and spread within the body.
Why is DNA replication important to organisms?
DNA replication is vital for the continuation of a species as it allows n organism to reproduce its genetic code and pass it along to the next generation. Without DNA replication, there would be no reproduction, so after all the current life dies out, there would be no more.
How are the accuracy of DNA and RNA assured?
Most DNA Polymerases and RNA polymerases have what is known as "proof-reading activity". This is the ability of the enzymes to check what bases they have added during DNA replication (in the case of DNA Polymerase) or transcription (in the case of RNA Polymerase), and if an error is found, splice it out and replace it with the correct base. The mode of action depends on the enzyme in question - some use endonucleases, and some use exonucleases; some work 5'-3' while others work 3'-5'. Also note that I said MOST polymerases have proof-reading capabilities...there are a few which do not (or don't proof-read very well).
How often in the life of a cell does replication occur?
Cell replication can occur at different rates depending on the cell type. In general, cell replication can range from a few hours to a few days. For example, skin cells replicate every few weeks, while intestinal cells replicate every few days.
How replication differ from translation?
well, since the previous person doesnt have a single working cell in his body, ill help u out Transcription- process that converts an mRNA message into a polypeptide. Translation- process of copying a sequence of DNA to produce a complementary strand of RNA. replication- process in which the RNA is duplicated
Why does a cell need to replicate its DNA quickly?
In human cells about 50 nucleotides are added every second to a new strand of DNA at that rate it would take days to to replicate a molecule of DNA. So it replicates all along the chromosome so it only takes a few hours.
