Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the
A) binding of ribosomes to mRNA.
B) shape of the A and P sites of ribosomes.
C) bonding of the anticodon to the codon.
D) attachment of amino acids to tRNAs.
E) bonding of the anticodon to the codon and the attachment of amino acids to tRNAs.

Question

Quizplus · Accepted Answer

Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on both the bonding of the anticodon to the codon (which ensures that the correct amino acid is added to the polypeptide chain) and the attachment of amino acids to tRNAs (which ensures that the correct amino acid is carried to the ribosome). Therefore, the best choice is E, which includes both of these factors. The other choices, such as binding of ribosomes to mRNA and shape of the A and P sites of ribosomes, do play a role in translation, but they do not directly contribute to accuracy in the translation process.

Accuracy in the Translation of MRNA into the Primary Structure