Final answer:
Tetracycline does not interfere with cell wall synthesis; it inhibits protein synthesis by targeting the ribosomal 30S subunit, unlike other antibiotics like cephalosporins, penicillins, vancomycin, and bacitracin that target cell wall synthesis. The answer is option B.
Step-by-step explanation:
The antibiotic that does not interfere with cell wall synthesis is tetracycline. Tetracyclines are a group of antibiotics that bind to the 30S subunit of bacterial ribosomes, inhibiting protein synthesis rather than cell wall synthesis. In contrast, antibiotics like cephalosporins, penicillins, vancomycin, and bacitracin are all known to disrupt the synthesis of the bacterial cell wall.
Specifically, cephalosporins and penicillins function by inhibiting the enzyme essential for cross-linking peptidoglycan layers in the cell wall, leading to bacterial lysis. Vancomycin blocks the incorporation of cell wall precursors into the growing cell wall structure. Bacitracin interferes with the transport of cell wall precursors across the cell membrane. Semisynthetic refers to a modification process that is not directly related to the mechanism of action but to the method by which a drug is made.