Question

Which of the classes of RNA molecules carries the amino acids that are added to the growing polypeptide chain?

विकल्प

• Ribosomal RNA

• Transfer RNA

• Messenger RNA

• Primary mRNA transcript

Answer 1

Transfer RNA

Explanation:

Transfer RNA (tRNA) acts as the physical “bridge” or adapter molecule between the genetic code in the mRNA and the building blocks of proteins. Each tRNA molecule is highly specific; one end of its structure carries a particular amino acid (attached at the 3’ end), while the other end contains a three-base sequence called an anticodon. During translation, the tRNA recognises and pairs with its complementary codon on the mRNA strand at the ribosome, ensuring the correct amino acid is delivered and added to the growing polypeptide chain in the precise order dictated by the genetic instructions.