Which of the following enzymes catalyzes the reaction that activates amino acids? A. ATP sintetasies / ATP synthetases B. Amino-asiel-tRNA sintetase / Aminoacyl-tRNA synthetase C. Peptidases / Peptidases D. Translokases / Translocases

Which of the following enzymes catalyzes the transpeptidation reaction linking amino acids in the growing polypeptide chain? A. Transpeptidase B. Peptidyl transferase C. Aminoacyl-tRNA synthetase D. Translocase

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.

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 synthase and one specific tRNA for each amino acidAll of the above

Which of the following correctly pairs the enzyme with the type of reaction it catalyzes in amino acid/nitrogen metabolism?Group of answer choicesbranched chain alpha keto acid dehydrogenase complex: oxidative decarboxylationaspartate aminotransferase: hydrolysisnitrate reductase: isomerasephosphoserine phosphatase: oxidation/reductionphosphoglycerate dehydrogenase: transamination

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