<prompt> All are true about cephalosporins, EXCEPT :Ceftazidime is a 3rd generation cephalosporin.Cefoperazone has got antipseudomonal effect.Cefoxitin has got no activity against anaerobes.Cephalosporins act by inhibiting cell wall synthesis.  <response>: β-lactam antibiotics act by inhibiting cell wall synthesis. These include penicillins, cephalosporins, carbapenems and monobactam. 