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How does transcription end?
Transcription ends when RNA polymerase reaches a terminator sequence on the DNA template strand. This signals the enzyme to stop synthesizing the RNA transcript and release it. The RNA transcript is then further processed and can be translated into a protein.
The sequence of nucleotides in DNA specifies the sequence of what in a protein?
The sequence of nucleotides in DNA specifies the sequence of amino acids in a protein. Each set of three nucleotides, called a codon, corresponds to a specific amino acid or a signal to start or stop protein synthesis.
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.
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.
Why do dideoxy nucleotides cause the DNA strand to stop elongating?
Dideoxy nucleotides lack a hydroxyl group at the 3' carbon, which is crucial for the formation of phosphodiester bonds during DNA synthesis. Without this hydroxyl group, the dideoxy nucleotides cannot form a bond with the next nucleotide in the growing DNA strand, leading to termination of strand elongation.
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
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 are the specific sequences of nucleotides that serve as the stop and start codons in the genetic code?
The specific sequences of nucleotides that serve as the stop codons in the genetic code are UAA, UAG, and UGA. The start codon is AUG.
Which process stop when rna polymerase comes to a terminator?
Transcription is the process that stops when RNA polymerase is terminated.
How does transcription end?
Transcription ends when RNA polymerase reaches a terminator sequence on the DNA template strand. This signals the enzyme to stop synthesizing the RNA transcript and release it. The RNA transcript is then further processed and can be translated into a protein.
A polypeptide found in the cytoplasm of a cell contains 12 amino acids How many nucleotides would be required in the mRNA for this polypeptide to be translated?
Since each amino acid is coded for by a specific triplet of nucleotides (codon), and there is a start codon and a stop codon, we need 15 nucleotides in the mRNA (3 nucleotides for each amino acid + 3 for start codon + 3 for stop codon).
The correct sequence of the events of transcription is?
RNA polymerase reaches the beginning of a gene.
The sequence of nucleotides in DNA specifies the sequence of what in a protein?
The sequence of nucleotides in DNA specifies the sequence of amino acids in a protein. Each set of three nucleotides, called a codon, corresponds to a specific amino acid or a signal to start or stop protein synthesis.
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.
What is a group of three nucleotides called?
This arrangement is called a codon.In DNA and RNA a group of three nucleotides in a row is called a codon. In tRNA a group of three nucleotides is called an anticodon.
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.
