The appropriate order for the basic steps of protein synthesis are:
A.The elongation reaction transfers the peptide chain from the peptidyl-tRNA in the P site to the aminoacyl-tRNA in the A sitE.
B.The P site is occupied by peptidyl-tRNA carrying the growing polypeptide chain.
C.Binding of mRNA by the small subunit followed by association of a particular initiator aminoacyl-tRNA that recognizes the first codon.
D.The large ribosomal subunit joins the initiation complex, preparing it for the elongation stagE.E.The new, longer peptidyl-tRNA moves from the A site into the P site as the ribosome moves one codon further along the mRNA.

Question

Quizplus · Accepted Answer

The correct order starts with the binding of mRNA by the small subunit (C), followed by the joining of the large ribosomal subunit (D). The P site is then occupied by peptidyl-tRNA (B), leading to the elongation reaction (A), and finally, the peptidyl-tRNA moves from the A site to the P site as the ribosome advances (E).

The Appropriate Order for the Basic Steps of Protein Synthesis