The major virulence factors of Yersinia pestis are carried on a plasmid
Indicate whether this statement is TRUE or FALSE.
Archaea are very similar to bacteria and have rigid cell walls made of peptidoglycan.
Indicate whether this statement is true or false.
HIV/AIDS can be categorized as a new or emerging infectious disease. By putting it into this category, we are effectively saying that
A. this infection hasn't been observed in the human population prior to recent (approximately 50 years or sooner) outbreaks.
B. this disease has been in susceptible populations for centuries, but has only recently achieved infection levels that became detectable.
C. the infectious agent is still evolving and changing, unlike with older, more established diseases such as plague or polio.
D. the disease has always been in susceptible populations and causing disease, but we lacked the technology to detect it.
Yellow fever is caused by a protozoan infection
Indicate whether this statement is TRUE or FALSE.
The media used to successfully grow Francisella tularensis must contain cysteine
Indicate whether this statement is TRUE or FALSE.
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