Microorganisms and Disease
Pseudomembraneous colitis is

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

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Microorganisms and Disease
Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?

The most serious disease symptoms are the direct result of toxin action
Both organisms cause skin and respiratory tract infections
Both organisms are gram-positive spore formers
Diphtheria toxin and edema toxin are ADP ribosylating toxins

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