Thank you for reporting, we will resolve it shortly
Q.
Activation of an amino acid during protein synthesis requiers a participation of specific molecule of:
J & K CETJ & K CET 2003
Solution:
$t-RNA$ is activated by $aa-AMP$ enzyme complex and specific amino acid is attached to $3$ end of $t-RNA$ molecule. The activation of amino acid is catalysed by amin oacyl $t-RNA$ synthetase enzymes.