Some strains of E. coli can cause serious diarrhea.
Some form resistant
endospores that
can survive harsh environmental conditions, for example Clostridium botulinum (botulism) or
Anthrax. The figure illustrates endospore formation (reading from left to right). Endospores are a
method of survival. The spore is formed within the cell membrane (an endospore) and allows the
bacteria to wait out deteriorating environmental conditions.
Borrelia burgdorferi a spirochete bacteria is transmitted by ticks to humans where it
causes Lyme disease.
REVIEW: Which of the following can bacteria use as an energy source?
a. hydrogen sulfide
b. nitrites
c. sunlight
d. ammonia
e. all of these
REVIEW: Which terms accurately describe the archaebacteria?
REVIEW: Endospores
a. are resistant bodies.
b. enable some bacteria to survive for long periods of time.
c. may contain concentrated poisons.
d. all of these
REVIEW: _____ are confined to extreme environments, probably much like those that prevailed on the
early Earth.