Amino acids for protein synthesis are first activated by:Group of answer choicesPhosphorylationAcetylationAdenylationMethylationUbiquitination

Why must an amino acid be activated first before being used for protein synthesis? BecauseGroup of answer choicesThe formation of a peptide bond between free amino acids is not thermodynamically favorableActivation of an amino acid enables its attachment to the tRNA moleculeThe synthetase enzyme only acts on activated amino acids

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

Amino acids are important in the synthesis of many ______, such as insulin and glucagon.Multiple choice question.hormonesbuffersproteinsenzymes

The _____ are the sites of protein synthesis.

The _____ are responsible for the synthesis and modification of proteins.