tRNA molecules are specific for which type of molecule?

tRNA molecules are specific for which type of molecule?

• A. Amino Acid
• B. Nucleic Acid
• C. Carbohydrate
• D. Lipid

Answer: (A)

tRNA molecules act as adapters that deliver a specific amino acid during protein synthesis. Each tRNA is charged with one kind of amino acid by the corresponding aminoacyl-tRNA synthetase, giving it a defined identity. The anticodon on the tRNA recognizes the complementary codon on mRNA, guiding the correct amino acid into the growing polypeptide chain. This charging step is what determines the tRNA’s specificity—the molecule is defined by the amino acid it carries, not by carbohydrates, lipids, or nucleic acids. The pairing with mRNA ensures proper placement of that amino acid, while the existence of multiple tRNA species for a single amino acid reflects codon diversity, not a shift in what the tRNA is specific for.

tRNA molecules act as adapters that deliver a specific amino acid during protein synthesis. Each tRNA is charged with one kind of amino acid by the corresponding aminoacyl-tRNA synthetase, giving it a defined identity. The anticodon on the tRNA recognizes the complementary codon on mRNA, guiding the correct amino acid into the growing polypeptide chain. This charging step is what determines the tRNA’s specificity—the molecule is defined by the amino acid it carries, not by carbohydrates, lipids, or nucleic acids. The pairing with mRNA ensures proper placement of that amino acid, while the existence of multiple tRNA species for a single amino acid reflects codon diversity, not a shift in what the tRNA is specific for.