Microorganisms and Disease
Pseudomembraneous colitis is

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

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Microorganisms and Disease
Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine?

The ability of the Rotavirus to be transmitted faster
The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings
A limited number of capsule types
The possession of a segmented RNA genome

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Microorganisms and Disease
The "A" subunit of diphtheria toxin

cause ADP ribosylation of a factor involved in protein synthesis
binds host cell receptors found on heart cells
forms cAMP that leads to fluid accumulation
lysis macrophages with the release of cytokines

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