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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 Moves along the mRNA and helps form the peptide strand?
Ribosomes move along the mRNA during protein synthesis. They help bring together amino acids to form a peptide strand based on the nucleotide sequence of the mRNA.
What is the maximum length of a polypeptide encoded by an mRNA that is 45 nucleotides long?
The maximum length of a polypeptide encoded by an mRNA is determined by the number of nucleotides in the mRNA sequence. Each amino acid is encoded by a set of three nucleotides called a codon. With a 45-nucleotide mRNA sequence, the maximum length of the polypeptide would be 45/3 = 15 amino acids.
Why did steps 3 and 4 produce different polypeptides?
Steps 3 and 4 likely produced different polypeptides due to differences in the nucleotide sequence of the mRNA that was used as the template for protein synthesis. The codons in mRNA determine the sequence of amino acids in the polypeptide chain. Any change in the nucleotide sequence can lead to the incorporation of different amino acids during translation, resulting in a different polypeptide being produced.
What amino acid wuld be produced of transcrition takes place from a nucleotide with the three-base sequence ATA?
Tyrosine. If ATA is the DNA codon, the mRNA transcription would be UAU (since A pairs with U in RNA rather than T). UAU codes for tyrosine.
Does mRNA contain uracil or thymine in its nucleotide sequence?
mRNA contains uracil in its nucleotide sequence, not thymine.
Does mRNA contain thymine in its nucleotide sequence?
No, mRNA does not contain thymine in its nucleotide sequence. Instead, mRNA contains uracil in place of thymine.
Which do you suppose would be more harmful A mutation that changed the nucleotide sequence of an mRNA molecule or a mutation that changed the nucleotide sequence of a DNA molecule?
A mutation in a DNA nucleotide sequence would be more harmful than a mutation in a mRNA nucleotide sequence because it could cause the synthesis of multiple nonfunctional proteins in comparison to a mutation in a mRNA nucleotide sequence that would be less harmful because it would result in a few nonfunctional proteins.
What is the relationship between a nucleotide sequence and an amino acid sequence in the process of protein synthesis?
During protein synthesis, a nucleotide sequence in DNA is transcribed into a messenger RNA (mRNA) sequence. This mRNA sequence is then translated into an amino acid sequence by ribosomes. Each set of three nucleotides in the mRNA, called a codon, corresponds to a specific amino acid. This relationship between nucleotide sequences and amino acid sequences is crucial for the accurate assembly of proteins in the cell.
What is the tRNA nucleotide sequence that lines up on the mRNA?
The tRNA molecule carries an anticodon sequence that matches up with the codon sequence on the mRNA during translation. For example, if the mRNA codon is AUG, the tRNA anticodon sequence that lines up with it is UAC. This pairing ensures that the correct amino acid is added to the growing protein chain.
What determines the amino acid sequence in a protein?
The sequence of amino acids in a protein is determined by the sequence of nucleotides in the mRNA, and this is determined by the sequence of nucleotide bases in the DNA.
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.
Which produced during translation ribosomal RNA transfer RNA proteins DNA?
During translation, ribosomal RNA (rRNA) helps in the formation of the ribosome structure, transfer RNA (tRNA) brings amino acids to the ribosome based on the codons present on the mRNA, and proteins are synthesized based on the mRNA sequence with the help of ribosomes and tRNA. DNA is not directly involved in translation process; it serves as the template for mRNA synthesis during transcription.
What is a ''codon''?
A three-nucleotide sequence in mRNA that specifies a particular amino acid or polypeptide termination signal; basic unit of the genetic code. In translation, an mRNA codon is recognized by its complementary tRNA anti-codon.
What is the relationship between the linear sequence of codons on mRNA and the linear sequence of amino acids in a polypeptide?
The linear sequence of codons on mRNA corresponds to the linear sequence of amino acids in a polypeptide through the process of translation. Each three-nucleotide codon on the mRNA molecule codes for a specific amino acid, and the sequence of codons determines the order in which amino acids are added to the growing polypeptide chain. This relationship is known as the genetic code.
Are ribosomes the site where translations or transcription takes place?
translation
What Moves along the mRNA and helps form the peptide strand?
Ribosomes move along the mRNA during protein synthesis. They help bring together amino acids to form a peptide strand based on the nucleotide sequence of the mRNA.
