Introduction -- Antibiotic resistance development -- Major classes of antibiotics -- Relevant concepts in Biochemistry -- The cell wall as a target -- Mechanism of resistance to B-lactams -- Antibiotic Vancomycin -- Antibiotics that inhibit nucleotide synthesis -- Antibiotics that inhibit DNA synthesis -- Drugs that cause DNA cleavage -- Antibiotics that inhibit RNA synthesis -- Antibiotics that inhibit RNA synthesis -- Antibiotics that disrupt membrane structure.