Question

1. in addition to the large subunit of the ribosome connecting upon reaching the start codon, another molecule appeared and bonded to that start codon. identify this additional molecule that has bound to the mrna. i need a hint trna amino acid dna mrna

Explanation:

During translation initiation, after the ribosome's large subunit connects at the start codon, a tRNA (transfer RNA) carrying the initiator amino acid (usually methionine) binds to the start codon on the mRNA. Amino acids are carried by tRNA, not binding directly to mRNA. DNA is not involved in this step of translation on mRNA, and mRNA is the template, not an additional molecule binding here. So the correct molecule is tRNA.

Answer:

A. tRNA