Chapter 19 Review: Prokaryotes: The First Single-Celled Creatures

  1. HIV is a retrovirus that possesses the enzyme
    1. DNA polymerase. (wrong)
    2. RNA polymerase. (wrong)
    3. reverse transcriptase. <==== correct
    4. ligase. (wrong)
    5. primase. (wrong)
      Hint
  2. Viruses may contain the following EXCEPT
    1. DNA (wrong)
    2. RNA (wrong)
    3. protein (wrong)
    4. nucleus <==== correct
    5. membranous envelope (wrong)
      Hint