Question

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.

Answer 1

Answer:

The appropriate order for the basic steps of protein synthesis are listed below

Explanation:

First step  D The large ribosomal subunit joins the initiation complex preparing it for elongation stage.

Second step C Binding of mRNA by small Sub unit followed by association of a particular initiator aminoacyl tRNA that recognizes the first codon.

Third step   B The P site is occupied by peptidyl tRNA carrying the growing polypeptide chain.

Fourth step A The elongation reaction transfers the peptide chain from the peptidyl  tRNA in the p site to the aminoacyl tRNA in the A site.

Fifth step   E The new longer Peptidyl tRNA moves from A site into the p site as the ribosome moves one codon further along the mRNA.