Which RNA transports amino acids to the ribosome during translation?

• A. Messenger RNA
• B. Transfer RNA
• C. Ribosomal RNA
• D. Small Nuclear RNA

Answer: (B)

During translation, an adaptor molecule delivers the correct amino acid to the ribosome as the polypeptide is built. That adaptor is transfer RNA. Each tRNA carries a specific amino acid and has an anticodon that matches a codon on the mRNA, ensuring the amino acid is added in the correct order. The ribosome uses this tRNA to form peptide bonds and extend the growing chain. Other RNA types have different roles: messenger RNA carries the genetic code, while ribosomal RNA helps form the ribosome and catalyze bond formation; small nuclear RNA participates in RNA processing.