Chemical Selection And The RNA World

10 Questions

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RNA Quizzes & Trivia

Review quiz for the topic of chemical selection and the RNA world.


Questions and Answers
  • 1. 
    In the RNA world, what two functions did RNA have?
    • A. 

      Synthesis of lipids

    • B. 

      Storing of genetic information

    • C. 

      Catalysis of chemical reactions

    • D. 

      Participation in transcription and translation

  • 2. 
    What two mutations occurred that made RNA the favorable macromolecule?
    • A. 

      Ability to form ionic bonds

    • B. 

      Ability to degrade other RNA molecules

    • C. 

      Ability to self-replicate

    • D. 

      Ability to synthesize nucleotides

  • 3. 
    Chemical selection occurs when a chemical has special properties that cause it to increase in...
  • 4. 
    Bartel and Szostak were the two scientists who proved chemical selection.
    • A. 

      True

    • B. 

      False

  • 5. 
    In Bartel and Szostak's experiment, each type of RNA, long and short, had how many regions?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 6. 
    What was the purpose of the tag sequence on the short RNA?
    • A. 

      To attach to the long RNA

    • B. 

      To form a covalent bond with another tag sequence

    • C. 

      To break the bond between long and short RNA

    • D. 

      To bind to the beads

  • 7. 
    Match the item used in Bartel and Szostak's experiment with its respective function.
    • A. Beads
    • A.
    • B. 220-nucleotide region of the long RNA
    • B.
    • C. 3' end of the short RNA
    • C.
    • D. Low pH wash
    • D.
    • E. Pool of RNA
    • E.
  • 8. 
    It is possible that DNA formed from an RNA molecule that had the ability to reverse transcribe.
    • A. 

      True

    • B. 

      False

  • 9. 
    Which are reasons why DNA was favored over RNA to store genetic information? (More than one answer)
    • A. 

      DNA is more stable

    • B. 

      RNA is more stable

    • C. 

      Since DNA is double stranded, it could take on the roles of storing information and catalyzing chemical reactions

    • D. 

      RNA could perform more functions if it didn't have to store information

  • 10. 
    Experiments have proven that RNA can catalyze the formation of peptide bonds. This would lead to the formation of...