<prompt> Which of the following antibiotic structurally resembles aminoacyl tRNA and also inhibits protein synthesis:Puromycin.Tetracycline.Chloramphenicol.Sulphonamides.  <response>: Puromycin structurally resembles aminoacyl t-RNA and inhibits protein synthesis by causing premature termination. Tetracyclines inhibit the binding of aminoacyl-tRNA to the A site. 