What triggers the termination step of translation?
Translation ends in a process called termination. Termination happens when a stop codon in the mRNA (UAA, UAG, or UGA) enters the A site. Stop codons are recognized by proteins called release factors, which fit neatly into the P site (though they aren’t tRNAs).
What are the 3 steps of the elongation of translation?
To see how cells make proteins, let’s divide translation into three stages: initiation (starting off), elongation (adding on to the protein chain), and termination (finishing up).
Where does initiation elongation and termination occur?
Translation is the process by which the genetic code contained within a messenger RNA (mRNA) molecule is decoded to produce a specific sequence of amino acids in a polypeptide chain. It occurs in the cytoplasm following DNA transcription and, like transcription, has three stages: initiation, elongation and termination.
What happens during the elongation phase of translation quizlet?
During the elongation step of translation, the protein molecule is completed. During the elongation step of transcription, the RNA molecule is synthesized. During the elongation step of translation, the protein molecule is synthesized.
What is termination biology?
Termination is the ending of transcription, and occurs when RNA polymerase crosses a stop (termination) sequence in the gene. The mRNA strand is complete, and it detaches from DNA.
What happens during initiation elongation and termination of DNA replication?
During elongation the leading strand is made continuously, while the lagging strand is made in pieces called Okazaki fragments. During termination, primers are removed and replaced with new DNA nucleotides and the backbone is sealed by DNA ligase.
Which of the events occur during eukaryotic translation elongation?
Which of the following events occur during eukaryotic translation elongation? A tRNA binds a codon and the ribosome adds amino acids from each tRNA to the polypeptide chain.
How does termination occur in transcription?
Transcription termination occurs when a transcribing RNA polymerase releases the DNA template and the nascent RNA. Termination is required for preventing the inappropriate transcription of downstream genes, and for recycling of the polymerase.
Where does elongation begin in transcription?
Once RNA polymerase is in position at the promoter, the next step of transcription—elongation—can begin. Basically, elongation is the stage when the RNA strand gets longer, thanks to the addition of new nucleotides.
What is the difference between elongation termination and translation?
Translation: Beginning, middle, and end. Elongation (“middle”): in this stage, amino acids are brought to the ribosome by tRNAs and linked together to form a chain. Termination (“end”): in the last stage, the finished polypeptide is released to go and do its job in the cell.
What is the process of translation?
Translation is a process by which the genetic code contained within a messenger RNA (mRNA) molecule is decoded to produce a specific sequence of amino acids in a polypeptide chain. It occurs in the cytoplasm following transcription and, like transcription, has three stages: initiation, elongation and termination.
What happens at the end of the translation chain?
The chain finally ends when a stop codon moves into the ribosome. This is the final step of translation, called termination. Termination begins with the arrival of one of the three stop codons: UAA, UAG, or UGA. When any of these enters the ribosome, the last amino acid cuts off its anchor to the last tRNA.
What are the three stages of translation?
There’s a beginning step, called initiation, a middle step, called elongation, and a final step, called termination. These three words may sound familiar to you. The same terms are used in transcription to describe the steps involved in making the mRNA strand. But, here in translation,…