Which of the following does the enzyme aminoacyl-tRNA synthetase [uh-mee-noh-AS-il T-R-N-A SIN-thuh-tays] catalyze?

W) Base-pairing between the tRNA and the mRNA

X) Transfer of the amino acid from the tRNA to form a peptide bond

Y) Charging of a tRNA with an amino acid

Z) Synthesis of tRNA molecules
Y) CHARGING OF A tRNA WITH AN AMINO ACID