Microorganisms and Disease
A major difference between EHEC and EPEC is

EPEC passes through the placenta to infect the fetus and EHEC does not
EHEC secretes a Shiga-like toxin and EPEC does not
EPEC rearranges host cell actin and EHEC does not
EHEC possesses a type III secretion system and EPEC does not

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

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

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Microorganisms and Disease
Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause

cleavage of rRNA that results in disruption of ribosome function
ADP ribosylation of adenylate cyclase that stops production of cAMP
ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
ADP ribosylation of guanylate cyclase that stimulates production of cGMP

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