In the activation of an amino acid for protein synthesisGroup of answer choicestwo separate enzymes are required, one to form the aminoacyl adenylate, the other to attach the amino acid to the tRNAmethionine is first formylated and then attached to a specific tRNAthe amino acid is attached to the 5 end of the tRNA through a phosphodiester bondthere is at least one specific aminoacyltRNA synthetase and one specific tRNA for each amino acidAll of the above

Aminoacyl-tRNA synthetases (amino acid activating enzymes):  Group of answer choicesin conjunction with another enzyme attach the amino acid to the tRNA.interact directly with free ribosomes.“recognize” specific tRNA molecules and specific amino acids.occur in multiple forms for each amino acid.require GTP to activate the amino acid.

The enzymes that reloads empty tRNA molecules with the proper amino acid.Group of answer choicesRNA polymerasetranscription factorpolyribosomeaminoacyl-tRNA synthetasespliceosomeNext

The amino acids are attached to the tRNA by theirGroup of answer choicescarboxyl groupamino groupR groupalpha carbonnone of the above

Which of the following is NOT a function of Aa-tRNA-synthetase?Group of answer choicesTo catalyse the formation of peptide bonds.Specific recognition of amino acids and tRNAs.Hydrolysis of ATP to make AMP-amino acid and pyrophosphate.To create a high energy bond between tRNA and amino acids.To attach amino acids with the right tRNA.

Which of the following biomolecules can serve as activated intermediates in protein synthesis?Group of answer choicesaminoacyl tRNAamino acid esterscharged tRNAa and call of the above