The tRNA bound to its amino acid is called

The tRNA bound to its amino acid is called

• A. Anticodon tRNA
• B. Transfer RNA
• C. Aminoacyl-tRNA
• D. Messenger RNA

Answer: (C)

Aminoacyl-tRNA is the form of tRNA that has its amino acid attached. The attachment is done by aminoacyl-tRNA synthetase, an enzyme that recognizes both a specific amino acid and its matching tRNA. It activates the amino acid with ATP, forming aminoacyl-AMP, then transfers the amino acid to the 3' end of the tRNA, creating an ester bond. This charged tRNA, often called aminoacyl-tRNA or simply charged tRNA, is what delivers the amino acid to the ribosome during translation, pairing its anticodon with the complementary codon on the mRNA. The other terms don’t describe this state. Anticodon refers to the tRNA region that pairs with codons, not to the overall carrier form; transfer RNA is the general molecule, which can be uncharged or charged; messenger RNA is a different molecule that provides the templated code.

Aminoacyl-tRNA is the form of tRNA that has its amino acid attached. The attachment is done by aminoacyl-tRNA synthetase, an enzyme that recognizes both a specific amino acid and its matching tRNA. It activates the amino acid with ATP, forming aminoacyl-AMP, then transfers the amino acid to the 3' end of the tRNA, creating an ester bond. This charged tRNA, often called aminoacyl-tRNA or simply charged tRNA, is what delivers the amino acid to the ribosome during translation, pairing its anticodon with the complementary codon on the mRNA.

The other terms don’t describe this state. Anticodon refers to the tRNA region that pairs with codons, not to the overall carrier form; transfer RNA is the general molecule, which can be uncharged or charged; messenger RNA is a different molecule that provides the templated code.