<prompt> Which of the following represent the mechanism of action of tetracycline?Inhibits peptidyl transferaseCauses misreading of mRNACauses termination of peptide chain elongationBinds to A site and inhibits attachment of tRNA  <response>: Tetracyclines are bacteriostatic antibiotics. It inhibits protein synthesis by binding to 30S ribosomal subunit, and prevents the attachment of aminoacyl tRNA to the mRNA - ribosome complex. As a result peptide chain fails to grow. Ref: Essentials of Medical Pharmacology, 5th Edition, Page 668-73 