<prompt> Diphtheria toxin acts by:Inhibiting acetyl choline releaseInhibiting glucose transportIncreasing levels of cyclic AMPInhibiting protein synthesis  <response>: Ans. is d i.e., Inhibiting protein synthesisRef: Ananthanarayan, 9the, p. 238 and 8the, p. 234An exotoxin with a similar mode of action can be produced by strains of Pseudomonas aeruginosa. 