Questions: 4:00 PM Wed Oct 19 learning.mheducation.com SmartBook: Welcome Question Mode: Ordering Question Put the following events of translational elong... Exit Assignment X 35 of 47 concepts completed Ordering Question Click and drag on elements in order Put the following events of translational elongation (the stage in translation that occurs after initiation) in the order that they occur, beginning with the first step at the top. Instructions The ribosome releases the second tRNA After the first amino acid has been brought to the ribosome, a tRNA carrying the second amino acid of a protein binds to the second codon. A covalent bond forms between the first and second amino acids. A covalent bond forms between the second and third amino acids. The ribosome moves down the mRNA by one codon, and a tRNA carrying the third amino acid comes into place. The ribosome releases the first tRNA Need help? Review these concept resources. Read About the Concept View: Overview of translation slide, LR Watch: How translation works video, LR Assignment Resources Your confidence to submit your answer: High Medium Low Reading © 2024 McGraw Hill. All Rights Reserved. Privacy Center Terms of Use

To correctly order the events of translational elongation, we need to understand the sequence of steps that occur during this stage of protein synthesis. Translational elongation involves the addition of amino acids to the growing polypeptide chain. Here is the correct order of events:

1. After the first amino acid has been brought to the ribosome, a tRNA carrying the second amino acid of a protein binds to the second codon.

   • This step involves the binding of a tRNA molecule, carrying the second amino acid, to the A site of the ribosome, matching the second codon on the mRNA.

2. A covalent bond forms between the first and second amino acids.

   • This step is the formation of a peptide bond between the first and second amino acids, catalyzed by the ribosome.

3. The ribosome releases the first tRNA.

   • After the peptide bond is formed, the ribosome releases the tRNA that was carrying the first amino acid, which is now part of the growing polypeptide chain.

4. The ribosome moves down the mRNA by one codon, and a tRNA carrying the third amino acid comes into place.

   • The ribosome translocates, moving one codon down the mRNA, allowing the next tRNA carrying the third amino acid to enter the A site.

5. A covalent bond forms between the second and third amino acids.

   • Another peptide bond is formed between the second and third amino acids, continuing the elongation of the polypeptide chain.

6. The ribosome releases the second tRNA.

   • Finally, the ribosome releases the tRNA that was carrying the second amino acid, as it is now part of the polypeptide chain.

In summary, the correct order of events in translational elongation is: binding of the second tRNA, formation of the first peptide bond, release of the first tRNA, ribosome translocation, formation of the second peptide bond, and release of the second tRNA.