Which of the following is not true of bubonic plague?
A. An infection can progress to septicemia.
B. It is caused by Yersinia pestis.
C. A patient exhibits fever, headache, nausea, and weakness.
D. It is transmitted by the fecal-oral route.
E. A patient often has enlarged inguinal lymph nodes.
Answer: D
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The shift to bipedalism required changes to the architecture of which of the following (select all that apply)?
A. skull B. spine C. pelvis D. legs E. hands
DNA and RNA are alike in
a. the pentose sugar. b. all the nitrogenous bases used to assemble the genetic code. c. the number of strands. d. their function in genetics. e. none of these.
Which of the following is (are) true concerning
tetanus? a. The pathogen spreads through the air. b. The pathogen is ingested through tainted canned food. c. The pathogen is a virus. d. Blood or nerves deliver the toxin to the spinal cord and brain. e. All of these are true.
In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu
" Although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. What is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? A) The virus was descended from a common ancestor of bird, pig, and human flu viruses. B) The infected individuals happened to be infected with all three virus types. C) Related viruses can undergo genetic recombination if the RNA genomes mix and match during viral assembly. D) The human was likely infected with various bacterial strains that contained all three RNA viruses.