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Why do dideoxy nucleotides cause the DNA strand to stop elongating?
It doesn't contain an OHO bond so no other nucleotides can attach to it.
Does transcription begin at a promoter region and continue until RNA polymerase reaches a stop codon?
yes,
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
How many amino acids would be in a molecule containing 15000 nucleotides?
One amino acid is encoded by 3 nucleotides. That means 150 amino acids are encoded by 150*3=450 nucleotides. But there are also Start and Stop condons, which are also encoded by 3 nucleotides each. Therefore, I guess, the theoretical minimum is 450 nucleotides and the full (maximum) should be 450+ 3+ 3= 456 nucleotides.
What is a unit of inheritance composed of a sequence of nucleotides of DNA?
It is known as a Gene. Along with its coding sequence it also possesses Start and Stop sequences.
What are the 6 steps of transcription?
1) RNA polymerase finds the promote or "start signal" along the DNA sequence. 2) RNA polymerase unwinds and upzips DNA 3) Then the enzyme adds complimentary RNA nucleotides to one DNA strand 4) This continues until a "top signal" is reached at the end of the gene on DNA 5) mRNA is released and leaves the nucleus 6) DNA zips together and twists
Why do dideoxy nucleotides cause the DNA strand to stop elongating?
It doesn't contain an OHO bond so no other nucleotides can attach to it.
Which process stop when rna polymerase comes to a terminator?
Transcription is the process that stops when RNA polymerase is terminated.
The correct sequence of the events of transcription is?
RNA polymerase reaches the beginning of a gene.
Does transcription begin at a promoter region and continue until RNA polymerase reaches a stop codon?
yes,
Can you stop a tornado by adding high heat?
No, adding high heat in the area of a tornado, or even directly into a tornado, would not stop it.
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
How many nucleotides of DNA code for the production of human growth hormone?
576, because there are 191 amino acids in human growth hormone. 191x3= 573, but then you add three to account for the nucleotides that act as a stop codon.
How many amino acids would be in a molecule containing 15000 nucleotides?
One amino acid is encoded by 3 nucleotides. That means 150 amino acids are encoded by 150*3=450 nucleotides. But there are also Start and Stop condons, which are also encoded by 3 nucleotides each. Therefore, I guess, the theoretical minimum is 450 nucleotides and the full (maximum) should be 450+ 3+ 3= 456 nucleotides.
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.
Should your parents have you on the title of their house to avoid forced sale?
If your parents granted a mortgage and then default on the payments, adding you to the title after granting the mortgage will not stop a foreclosure.If your parents granted a mortgage and then default on the payments, adding you to the title after granting the mortgage will not stop a foreclosure.If your parents granted a mortgage and then default on the payments, adding you to the title after granting the mortgage will not stop a foreclosure.If your parents granted a mortgage and then default on the payments, adding you to the title after granting the mortgage will not stop a foreclosure.
What is an open frame?
open reading frame is the sequence of nucleotides which start up with the start codon and end up with the stop codon.
