<prompt> The following statement is false regarding beta-lactam group of antibiotics?Pencillins are more active against gram positive organismsAmoxycillin is not suitable for meningitisPencilloic acid is the active moietyPencillin V and Pencillin G are natural pencillins  <response>: The active moiety in Pencillins having antibacterial propey is 6 amino penicillanic acid which contains beta-lactam ring. Pencilloic acid is responsible for pharmacokinetic propeies.Ref: HL Sharma 3rd ed. Pg: 728 