Microbiology: An Introduction (13th Edition)
Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 15, Problem 10MCQ

Which of the following statements is true?

  1. a. The primary goal of a pathogen is to kill its host.
  2. b. Evolution selects for the most virulent pathogens.
  3. c. A successful pathogen doesn’t kill its host before it is transmitted.
  4. d. A successful pathogen never kills its host.
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Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.
A number of mosquito populations are today resistant to DDT, even though those species were not resistant to DDT when it was first introduced. Biologists would explain that DDT resistance evolved in mosquitos because: A. A few mosquitos were probably resistant to DDT before it was ever used. B. Mosquitos learned to adapt to their environment. C. Individual mosquitos built up an immunity to DDT after being exposed to it. D. Mosquitos needed to be resistant to DDT in order to survive.
True or false a. The immune system normally produces "self-antibodies" to recognize self cells b. Vaccines work by showing the immune system a "preview" of a virus or other pathogen. c. Viruses cannot evolve because they are not alive. d. We can stop vaccinating for a disease once no more cases are being reported. Choose one of the FALSE statements from the previous question and explain why it is false.
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