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Transcription is the process that stops when RNA polymerase is terminated.
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What is the difference between the terminator sequence and the stop codon in genetic transcription and translation processes?
The terminator sequence marks the end of a gene during transcription, signaling the RNA polymerase to stop. The stop codon, on the other hand, signals the end of protein synthesis during translation, causing the ribosome to release the completed protein.
The correct sequence of the events of transcription is?
RNA polymerase reaches the beginning of a gene.
Describe the process of transcription in biology?
This process occurs in the nucleus of a cell. Firstly DNA helicase, will break the hydrogen bonds holding together the two strands of DNA. This exposes the bases on the two strands. RNA polymerase then anneals free nuleotides via phosphodiester bonds, via complementary base pairing to one strand of DNA, known as the template strand. Thus a strand of pre-messenger RNA is built, as the RNA polymerase moves along the DNA strand, the two DNA strands join up behind it. RNA polymerase stops the process of transcription when it reaches stop codons, which tell the enzyme to stop annealing nucleotides. The product is a length of pre-mRNA, which can then leave the nucleus throguh the nuclear pores and undergo splicing to remove introns and then translation.
How does RNA polymerase know where to start transcribing a gene into mRNA?
The enzyme that synthesizes RNA (RNA polymerase) binds specific DNA sequencesthat typically lie before the gene being transcribed. When everything it needs to start synthesis is properly assembled (any cofactors, etc.), only then can it begin transcribing DNA into RNA.
What determines where on the DNA molecule transcription begins and where it ends?
I think you are referring to translation - translation is the process of replicating the DNA sequence in order to produce a code for the production of a particular protein, known as an mRNA strand. This code is read in sequences of three bases known as codons. The beginning and end of the mRNA strand is determined by start and stop codons. Start codons, unlike stop codons, also need nearby sequences and initiation factors in order to begin translation. Start codons include base sequences of usually AUG or possibly GUG or UUG depending on the organism. There are three stop codons and these are UAG, UGA and UAA
What is the terminator in mRNA synthesis?
The terminator in mRNA synthesis is a specific DNA sequence that signals the end of transcription. When the RNA polymerase reaches the terminator sequence, it stops transcribing the mRNA molecule, releasing it from the DNA template.
What is the difference between the terminator sequence and the stop codon in genetic transcription and translation processes?
The terminator sequence marks the end of a gene during transcription, signaling the RNA polymerase to stop. The stop codon, on the other hand, signals the end of protein synthesis during translation, causing the ribosome to release the completed protein.
What signals the termination of translation?
Translation terminates when a stop codon (UAA, UAG, or UGA) is reached in the mRNA. This stop codon is recognized by release factors, which promote the release of the completed polypeptide chain from the ribosome.
Does transcription begin at a promoter region and continue until RNA polymerase reaches a stop codon?
Transcription begins at a promoter region on the DNA where RNA polymerase binds to initiate the process. It continues along the DNA template strand until it reaches a termination signal, not a stop codon, which signals the end of transcription.
The correct sequence of the events of transcription is?
RNA polymerase reaches the beginning of a gene.
What cause RNA polymerase to stop transcribing mRNA?
RNA polymerase stops transcribing mRNA when it encounters a termination signal in the DNA sequence, typically a specific sequence of nucleotides that signals the end of a gene. This signal can be formed by specific sequences that lead to the formation of a hairpin loop in the RNA, causing RNA polymerase to dissociate from the DNA template. Additionally, termination factors may assist in this process, ensuring that transcription is completed accurately.
How does transcription end?
Transcription ends once the a termination sequence is reached. The sequence depends on which polymerase is being used and if the organism is a eukaryote or prokaryote. In Eukaryotes when RNA polymerase 1 is used the termination sequence is an 18 nucleotide long sequence. For RNA polymerase 3 the termination sequence is a short sequence of Uricils but the hairpin loop is not formed as it is in prokaryotes. For RNA polymerase 2 transcription is terminated and cleavage takes place 10-35 nucleotides downstream of the AAUAA sequence. For prokaryotes, termination can occur 2 ways. Termination can occur once the termination sequence is reached or using a protein called Rho factor. For termination without Rho factor, the termination sequence is short and rich in Guanines and Cytosines followed by many Uricils in a row. A-U bonds are weaker than G-C bonds, the string of U-A bonds are easily broken and release the RNA strand Using a Rho factor, once the Terminal sequence is reached, the Rho factor binds to a sequence 50-90 bases long and unwinds the DNA from the RNA , moving towards the 3' end, releasing the RNA
Who would win in a fight the Terminator or Robocop?
Terminator. Robocop is about on the level of Master cheif. The more human you are when fighting a machine the weaker you are. Terminator would wipe the floor with Robocop. lets compare. 1.Terminator is programmed to repare itself if it gets hurt. 2.If he is programmed, a machine is way harder to discourage, and stop, than a human. I think the last answer was pretty good, but i do not think that it was very well thought out. Is a human really going to be more tenacious than a Machine? no Terminator.
How do you use terminal in a sentence?
Get off the bus at the terminal, there will not be another stop after that stop.
Why is it necessary to have a primer on each side of DNA segment to be amplified?
Primers are necessary on each side of a DNA segment to be amplified because they provide a starting point for DNA polymerase to initiate replication. Each primer binds to its complementary DNA strand, allowing the polymerase to synthesize new DNA in the 5' to 3' direction. By having primers on both sides, the entire target region can be amplified in a process called polymerase chain reaction (PCR), producing multiple copies of the specific DNA segment. Without primers on both ends, the DNA polymerase would not know where to start or stop, preventing efficient amplification.
How does DNA polymerase know when to stop adding nucleotides?
DNA polymerase knows when to stop adding nucleotides primarily due to the presence of a specific DNA sequence known as a termination signal. In prokaryotes, this can be a specific sequence in the DNA that causes the polymerase to dissociate. In eukaryotes, termination often involves interactions with proteins and specific signals that indicate the end of a gene. Additionally, the DNA template's structural features can also play a role in signaling the completion of replication.
What determines where on the DNA molecule transcription begins and ends?
An RNA primer will attach to the unzipped DNA molecule signaling the beginning of transcription and transcription will occur until the DNA molecule is completely copied (the end is when there is no more DNA molecule to replicate).
