Spore-forming bacteria such as diphtheria or bacteria fusiform may be difficult to destroy.

Question

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Diphtheria is caused by Corynebacterium diphtheriae, which does not form spores. Fusiform bacteria refer to a shape rather than a specific bacterium and typically do not include spore-formers. Spore-forming bacteria, like Bacillus or Clostridium species, are indeed hard to destroy, but the examples given do not fit this category.

Spore-Forming Bacteria Such as Diphtheria or Bacteria Fusiform May Be