Biology, Eighth Edition (Raven)

Chapter 27: Viruses

Learning Outcomes

Chapter 27
  • Understand why viruses are not considered living organisms.
  • Review the general structure of viruses, bacteriophages.
  • Know the early biological history surrounding the discovery and characterization of viruses.
  • Contrast the difference between the replication cycles: lytic cycle versus lysogenic cycle.
  • Describe the difference between a retrovirus and DNA virus.
  • Describe the actions of a retrovirus and roll of transcriptase.
  • Explain the process of viral infection using HIV as an example.
  • Describe AIDS infection and treatments.
  • Understand the importance and consequences of cell transformation by viruses.
  • Give examples of various virally mediated human diseases.
  • Explain how prions cause disease.
  • Explain how viroids cause disease.
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