The antibiotic that inhibits protein synthesis by premature chain termination and which structurally resembles an aminoacyl t-RNA is -: (A) Tetracycline, (B) Chloramphenicol, (C) Puromycin, (D) Erythromycin
Answer is C. Ans. is 'c' i.e., Puromycin o Puromycin is a tRNA analogue which combines with amino acid in place of tRNA and forms a complex with amino acid that prevents addition of fuher amino acids to polypeptide (i.e. causes premature chain termination).