Syphilis was once treated by intentionally infecting the patient with the parasite that causes malaria, a disease characterized by repeated bouts of fever, shaking, and chills
Why might this treatment cure syphilis?
A. Malaria parasites produce strong antibacterial compounds (since they're eukaryotic in nature-they are trying to eliminate their competition for resources). This helps to eliminate ALL bacteria in and on the human body for a short period of time.
B.
Malaria parasites track down and feed upon ALL bacterial cells in the human body as a part of their life cycle. This makes them a "natural antibiotic" of sorts, and highly effective at clearing the bacterial infection of syphilis.
C. One of the side effects of malarial infection is a massive overproduction of macrophages-so many that they become the dominant cell type in the blood (even over red blood cells!). This drives up the ability to ingest and destroy any microbe, including the bacterium that causes syphilis.
D. The effect of driving up the body temperature for periods of time can shut down the temperature-sensitive replication of the bacterium that causes syphilis. This gives the immune system time to eliminate it properly.
D
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Antibiotic resistant strains of bacteria are a modern health concern. Namely, the overuse of antibiotics has promoted the survival of bacteria with alleles that allow resistance. This is an example of ____ selection
a. directional b. stabilizing c. disruptive d. recessive e. fitness
The mollusk group that includes the fastest, largest,
and smartest invertebrates is the a. chitons. b. cephalopods. c. gastropods. d. bivalves. e. nudibranchs.
What type of noncoding DNA comprises the largest portion of multicellular eukaryotic genomes?
a) introns b) pseudogenes c) transposons d) gene regulatory sequences e) centromeric sequences
Physician Edward Jenner promoted the use of cowpox, a harmless pathogen related to the dangerous smallpox, as a vaccination to provide patients immunity from future smallpox epidemics. This is an example of
A. active immunity. B. passive immunity. C. an inflammatory response that decreased the IgE production and increased T cells. D. developing high levels of interferon although Jenner did not realize these diseases were viral. E. developing high levels of complement.