Microorganisms and Disease
Pseudomembraneous colitis is

precipitated by the use of certain antibiotics
caused by a gram-positive bacterium
All of these
caused by a spore-forming bacterium

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Microorganisms and Disease
Which of the following is true regarding anthrax?

Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis
Inhalation Anthrax requires infection with a large number of spores
Anthrax is caused by a virus
Anthrax is highly contagious

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