Microbiology 9th Edition by Laura Black, Jacquelyn Black

Exercise 11

All of the following are true about Clostridium botulinum, the causative agent of botulism, EXCEPT:
(a) Their ability to form toxin depends on infection with a bacteriophage.
(b) They can produce one of eight different toxins, all of which cause human disease.
(c) They produce the most potent toxin known.
(d) Although their endospores are highly heat-resistant, their toxin can be inactivated by only a few minutes' boiling.
(e) All of the above are true.