Which RNA type is essential for bringing the correct amino acids during protein synthesis?

Transfer RNA (tRNA) is essential for bringing the correct amino acids during protein synthesis because it serves as the molecular bridge between the mRNA sequence and the corresponding amino acids that make up a protein. Each tRNA molecule carries a specific amino acid and has an anticodon that pairs with the codon on the mRNA strand. This pairing ensures that the amino acids are added in the correct order as dictated by the genetic code, ultimately leading to the proper formation of proteins.

The other types of RNA play different roles in the process. Messenger RNA (mRNA) is responsible for carrying the genetic information from DNA to the ribosome, where protein synthesis occurs, but it does not bring amino acids itself. Ribosomal RNA (rRNA) is a structural component of ribosomes and participates in the assembly of amino acids into proteins, but it does not deliver amino acids. Small nuclear RNA (snRNA) is involved in RNA splicing within the nucleus, which is unrelated to the process of amino acid delivery during translation.