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For more information, please see full course syllabus of Life Science
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Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Objectives 0:06
    • Objectives
  • What are Viruses? 0:19
    • What are Viruses?
    • Bacteriophage
    • Basic Structure: Protein Coat and Nucleic Acid Core
    • Examples of Viruses
  • How are Viruses Classified? 3:44
    • DNA Viruses & RNA Viruses
  • Dead or Alive? 6:15
    • Viruses are Not Living Organisms
    • Viruses are Living Organisms
  • How do Viruses Reproduce? 9:04
    • Infecting Living Cells: Lytic Cycle and Lysogenic Cycle
  • Lysogenic Cycle 15:19
    • Lysogenic Cycle
  • Lytic Cycle 16:27
    • Lytic Cycle
  • Example 1: Describe the Basic Structure of a Virus 17:27
  • Example 2: Why are Viruses not Considered Living Organisms? 18:02
  • Example 3: Compare and Contrast DNA and RNA Viruses 18:46
  • Example 4: identify the Two Viral Reproductive Cycles in the Picture Below 19:56