Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Life Sciences Fundamental Processes Protein synthesis and processing
Which of the following statements correctly differentiates Class I from Class II aminoacyl-tRNA synthetases?
1
Class I aminoacyl-tRNA synthetases attach amino acids to the 3' end of the tRNA, while Class II enzymes attach them to the 5' end.
2
Class I aminoacyl-tRNA synthetases primarily recognize the anticodon loop of tRNA for activation, whereas Class II enzymes generally recognize the acceptor stem.
3
Class I aminoacyl-tRNA synthetases typically form dimers as their functional units, whereas Class II enzymes often function as monomers.
4
Class I aminoacyl-tRNA synthetases add amino acids to the tRNA's 2'-OH group of the terminal adenosine, whereas Class II enzymes add amino acids to the 3'-OH group.
5
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