Chapter 12 Test - Biology

32 Questions | Total Attempts: 719

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Biology Quizzes & Trivia

Questions and Answers
  • 1. 
    The following components make up a nucleotide: a sugar, ___________, and a nitrogenous base.
    • A. 

      A phosphate

    • B. 

      A ribose

    • C. 

      A deoxyribose

    • D. 

      A backbone

  • 2. 
    What are the four bases found in DNA?
    • A. 

      G, C, A, U

    • B. 

      G, C, A, T

    • C. 

      A, U, G, C

    • D. 

      A, T, G, U

  • 3. 
    The process by which one strain of bacterium is apparently changed into another strain is called _________.
    • A. 

      Transcription

    • B. 

      Transformation

    • C. 

      Duplication

    • D. 

      Replication

  • 4. 
    Bacteriophages are _______.
    • A. 

      A form of bacteria

    • B. 

      Enzymes

    • C. 

      Coils of DNA

    • D. 

      Viruses

  • 5. 
    Which of the followng researchers used radioactive markers in experiments to show that DNA was the genetic material in cells?
    • A. 

      Frederick Griffith

    • B. 

      Oswald Avery

    • C. 

      Alfred Hershey and Martha Chase

    • D. 

      James Watson and Francis Crick

  • 6. 
    Before DNA could be shown to be the genetic material in cells, scientists had to show that it could ___________.
    • A. 

      Tolerate high temperatures

    • B. 

      Carry and make copies of information

    • C. 

      Be modified in response to environmental conditions

    • D. 

      Be broken down into small subunits

  • 7. 
    A nucleotide does not contain ________.
    • A. 

      A 5-carbon sugar

    • B. 

      An amino acid

    • C. 

      A nitrogen base

    • D. 

      A phosphate group

  • 8. 
    According to Chargoff's rul of base pairing, which of the following is true about DNA?
    • A. 

      A = T, C = G

    • B. 

      A = C, T = G

    • C. 

      A = G, T = C

    • D. 

      A = T = C = G

  • 9. 
    The bonds that hold the two strands of DNA together come from ___________.
    • A. 

      The attraction of phosphate groups for each other

    • B. 

      Strong bonds between nitrogenous bases and the sugar-phosphate backbone

    • C. 

      Weak hydrogen bonds between nitrogenous bases

    • D. 

      Carbon-to-carbon bonds in the sugar portion of the nucleotides

  • 10. 
    In prokaryotes, DNA molecules are located in the _____.
    • A. 

      Nucleus

    • B. 

      Nucleoid region

    • C. 

      Ribosomes

    • D. 

      Histones

  • 11. 
    In eukaryotes, all the DNA (except for mitochondria and chloroplasts) is found in the  _____.
    • A. 

      Nucleus

    • B. 

      Nucleoid region

    • C. 

      Ribosomes

    • D. 

      Histones

  • 12. 
    The main enzyme responsible for linking individual nucleotides into DNA molecules is ______.
    • A. 

      DNA protease

    • B. 

      Ribose

    • C. 

      Carbohydrase

    • D. 

      DNA polymerase

  • 13. 
    During replication, which sequence of nucleotides would bond with the DNA sequence TATGA?
    • A. 

      TATGA

    • B. 

      ATACT

    • C. 

      CACTA

    • D. 

      AGTAT

  • 14. 
    The scientist(s) responsible for the discovery of bacterial transformation is (are) ___________.
    • A. 

      Watson and Crick

    • B. 

      Avery

    • C. 

      Griffith

    • D. 

      Franklin

  • 15. 
    Which of the following does not describe the structure of DNA?
    • A. 

      Double helix

    • B. 

      Nucleotide polymer

    • C. 

      Contains adenine-guanine pairs

    • D. 

      Sugar-phosphate backbone

  • 16. 
    What Hershey and Chase's work show?
    • A. 

      Genes are probably made of DNA.

    • B. 

      Genes are probably made of protein.

    • C. 

      Viruses contain DNA but not protein.

    • D. 

      Bacteria contain DNA but not protein.

  • 17. 
    The two "backbones" of the DNA molecule consist of _____.
    • A. 

      Adenines and sugars

    • B. 

      Phosphates and sugars

    • C. 

      Adenines and thymines

    • D. 

      Thymines and sugars

  • 18. 
    In eukaryotic chromosomes, DNA is tightly coiled around proteins called ________.
    • A. 

      DNA polymerase

    • B. 

      Chromatin

    • C. 

      Histones

    • D. 

      Nucleotides

  • 19. 
    Compared to eukaryotic cells, prokaryotic cells contain ________.
    • A. 

      About 1000 times more DNA

    • B. 

      About 1/1000 as much

    • C. 

      Twice as much

    • D. 

      The same amount of DNA

  • 20. 
    In the Hershey-Chase experiment, components on phages were tagged with radioactive elements. Proteins were tagged with ________, while DNA was tagged with _______.
    • A. 

      Sulfur-35, phosphorus-37

    • B. 

      Phosphorus-37, sulfur-35

    • C. 

      Deoxyribose, ribose

    • D. 

      Ribose, deoxyribose

  • 21. 
    E.C. DNA replication _______.
    • A. 

      Occurs in the same direction on both strands

    • B. 

      Occurs using only one half of the double helix

    • C. 

      Happens smoothly on one strand, but is more complicated on the other strand

    • D. 

      Does not require any enzymes

  • 22. 
    The sugar-phosphate backbone is held together with _____ bonds.
    • A. 

      Hydrogen

    • B. 

      Covalent

    • C. 

      Ionic

    • D. 

      Van der Waals

  • 23. 
    In Griffith's experiment, mice were injected with two strains of bacteria, S (deadly) and R (harmless). Which of the four groups of mice produced a conclusive result?
    • A. 

      The living S group

    • B. 

      The dead S group

    • C. 

      The living R group

    • D. 

      The dead S, living R group

  • 24. 
    Whose work on X-ray diffraction on DNA provided important clues to developing a model of DNA'?
    • A. 

      Rosalind Franklin

    • B. 

      Oswald Avery

    • C. 

      Alfred Hershey

    • D. 

      Martha Chase

  • 25. 
    The two strands of DNA run ___________ one another.
    • A. 

      Parallel to

    • B. 

      Antiparallel to

    • C. 

      On top of

    • D. 

      Abound to

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