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A stop codon on an mRNA molecule does not code for any?
A stop codon on an mRNA molecule signals the ribosome to stop translating the mRNA sequence into a protein. It does not code for any amino acid and instead marks the end of protein synthesis. The three stop codons are UAA, UAG, and UGA.
When does the polypeptide stop growing?
The polypeptide stops growing when it reaches a stop codon on the mRNA during translation. This signals the ribosome to release the polypeptide chain, which then undergoes further processing to become a functional protein.
What is the sequence of events in translation?
1 ribosomes bind to mRNA 2 Amino acid-carrying tRNA molecules bind to mRNA 3 the polypeptide elongates as new amino acids are added 4 a stop codon on the mRNA is reached 5 the polypeptide is released 6 the ribosomes dissociate from the mRNA plato=C
What is the term for a 3-nucleotide sequence on mRNA that codes for an amino acid?
the three nucleotides on a mRNA that codes for a amino acid is called a codon
What would happen if during translation of a protein the mRNA codon UAA sequence was presented?
If the mRNA codon UAA is encountered during translation, it serves as a stop codon, signaling the ribosome to stop protein synthesis and release the completed protein. This results in the premature termination of translation, leading to a shorter and incomplete protein being produced.
If an mRNA is made up of 60 bases how many codons does it contain and how many amino acid does it code for?
A codon is exactly three bases long, so an mRNA strand with 60 bases would contain 20 codons. The first codon will encode for methionine (this is called the "start" codon) and the last codon will be a "stop" codon, which does not encode for an amino acid. Thus, an mRNA strand of 60 bases will code for 19 amino acids. Keep in mind, it is possible for a stop codon to be anywhere on the mRNA strand, and when a stop codon reaches the ribosome, translation must stop. For example, if an mRNA strand contained 30 codons, and the 15th were a stop codon, the mRNA would only code for 14 amino acids and then be done. The other 15 codons would go untranslated.
A stop codon on an mRNA molecule does not code for any?
A stop codon on an mRNA molecule signals the ribosome to stop translating the mRNA sequence into a protein. It does not code for any amino acid and instead marks the end of protein synthesis. The three stop codons are UAA, UAG, and UGA.
What is the three base sequence in mRNA?
The three base sequence in mRNA is called a codon. Codons code for specific amino acids during protein synthesis. Each codon corresponds to a specific amino acid or a stop signal.
When does the polypeptide stop growing?
The polypeptide stops growing when it reaches a stop codon on the mRNA during translation. This signals the ribosome to release the polypeptide chain, which then undergoes further processing to become a functional protein.
What is the sequence of events in translation?
1 ribosomes bind to mRNA 2 Amino acid-carrying tRNA molecules bind to mRNA 3 the polypeptide elongates as new amino acids are added 4 a stop codon on the mRNA is reached 5 the polypeptide is released 6 the ribosomes dissociate from the mRNA plato=C
What is the term for a 3-nucleotide sequence on mRNA that codes for an amino acid?
the three nucleotides on a mRNA that codes for a amino acid is called a codon
What code tells a cell to stop making a protein?
The code for a cell to stop making a protein is a stop codon in the mRNA sequence. Proteins are synthesized by the ribosome until it encounters a stop codon (e.g., UAA, UAG, UGA), which signals the end of translation, leading to the release of the protein and dissociation of the ribosome from the mRNA.
Which mRNA codons will start the process of translation?
If you're referring to stop codons, then there are three: UAA, UAG and UGA. They do indeed stop translation, though I wouldn't say they halt ribosomes. Stop codons code for a releaser enzyme, one that fits the A site of the ribosome, but does not carry an amino acid. This enzyme cuts the bond between the polypeptide and the last tRNA.
What is the third codon in the mrna you produce in?
What the third codon is differs depending on the type of mRNA used for translation. The one thing that all translations have in common is that they all start with methionine (AUG), the start codon, and end with one of several stop codons. Everything in between is determined by the mRNA.
Describe the difference between a termination signal and a stop codon?
Termination signal is at the end of the part of the chromosome being transcribed during transcription of mRNA. While in a stop codon, also called termination codon, is a nucleotide triplet within messenger RNA that signals a termination of translation.
What would happen if during translation of a protein the mRNA codon UAA sequence was presented?
If the mRNA codon UAA is encountered during translation, it serves as a stop codon, signaling the ribosome to stop protein synthesis and release the completed protein. This results in the premature termination of translation, leading to a shorter and incomplete protein being produced.
What protein sequence is coded by the code UAG?
The sequence UAG is the mRNA codon that means "stop" and does not code for an amino acid.
