Which type of RNA carries amino acids to the ribosome?

Which type of RNA carries amino acids to the ribosome?

• A. mRNA
• B. tRNA
• C. rRNA
• D. miRNA

Answer: (B)

In protein synthesis, the molecule that delivers amino acids to the ribosome is transfer RNA. Each tRNA is charged with a specific amino acid and has an anticodon that pairs with the corresponding codon on the mRNA, acting as the adaptor that translates the genetic code into a growing polypeptide. This delivery system is essential because the ribosome reads codons on mRNA, not amino acids directly, so tRNA brings the correct amino acid in response to each codon. The other RNAs have different roles: mRNA carries the genetic information that specifies the sequence of amino acids; rRNA forms the ribosome and helps catalyze peptide bond formation; miRNA regulates gene expression rather than transporting amino acids.

In protein synthesis, the molecule that delivers amino acids to the ribosome is transfer RNA. Each tRNA is charged with a specific amino acid and has an anticodon that pairs with the corresponding codon on the mRNA, acting as the adaptor that translates the genetic code into a growing polypeptide. This delivery system is essential because the ribosome reads codons on mRNA, not amino acids directly, so tRNA brings the correct amino acid in response to each codon. The other RNAs have different roles: mRNA carries the genetic information that specifies the sequence of amino acids; rRNA forms the ribosome and helps catalyze peptide bond formation; miRNA regulates gene expression rather than transporting amino acids.