AP Bio Unit Iv Part I

49 Questions  I  By Tarob99
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  • 1. 
    Which is Not a major function of the genetic material?
    • A. 

      Store information

    • B. 

      Replicate itself

    • C. 

      Catalyze chemical reactions

    • D. 

      Undergo mutations


  • 2. 
    DNA was discarded as a possible candidate for the genetic material because
    • A. 

      With only four types of nucleotides, it was a very simple, repetitive molecule that could not account for 20 different amino acids.

    • B. 

      Is had been shown that proteins were more important in transferring genetic information than nucleic acids.

    • C. 

      Proteins and carbohydrates were of more interest.

    • D. 

      It was thought that RNA was more likely to be the genetic material.


  • 3. 
    . The process of transformation in bacteria involves
    • A. 

      Transfer of genes between two bacteria.

    • B. 

      infection with a virus called bacteriophage

    • C. 

      Production of a cancer cell.

    • D. 

      The mating of two different kinds of live bacteria.


  • 4. 
    DNA was first proven to be the transforming factor on bacterial cells by
    • A. 

      Meischer

    • B. 

      Watson and Crick

    • C. 

      Griffin

    • D. 

      McClintock

    • E. 

      Avery


  • 5. 
    Hershey and Chase experimented with radioactively labeled phosphorus and sulfur to determine that DNA and not protein is the genetic material. Which of the following was essential to this confirming experiment?
    • A. 

      Sulfur is present in amino acids in the protein coat of bacteria.

    • B. 

      Phosphorus is present in high amounts in DNA.

    • C. 

      Sulfur is not present in DNA

    • D. 

      Phosphorus is not present in amino acids in the protein coat of bacteria.

    • E. 

      All of the above were critical to demonstrating DNA is involved in genetic material.


  • 6. 
    DNA was proven to be the transforming substance when only the _____ enzymes could inhibit transformation.
    • A. 

      proteinase

    • B. 

      RNase

    • C. 

      DNase

    • D. 

      Lipase


  • 7. 
    One of Chargaff's rules state
    • A. 

      A + T = G + C

    • B. 

      A + G = T + C

    • C. 

      A = G, T = C

    • D. 

      A = C, T = G


  • 8. 
    The amount of adenine is always equal to the amount of ____ in DNA.
    • A. 

      cytosine

    • B. 

      Uracil

    • C. 

      Guanine

    • D. 

      Thymine

    • E. 

      ATP


  • 9. 
    . The x-ray diffraction photography of Rosalind Franklin and Maurice was critical evidence of DNA
    • A. 

      Indicating that DNA has a double helix structure.

    • B. 

      Showing equal number of purines and pyrimidines.

    • C. 

      Showing the bases of DNA were held together by hydrogen bonds.

    • D. 

      Revealing the structure of the deoxyribose sugar.

    • E. 

      Of the location of each adenine, guanine, cytosine, and thymine.


  • 10. 
    . In the Watson and Crick model of DNA, the "steps" of the ladder are composed of
    • A. 

      sugars

    • B. 

      A purine and a pyrimidine

    • C. 

      Two purines

    • D. 

      Two pyrimidines

    • E. 

      A sugar and a phosphate molecule


  • 11. 
    Which of the following statements about DNA replication is Not correct?
    • A. 

      Unzipping of the DNA molecule occurs as hydrogen bonds break.

    • B. 

      Replication occurs as each base is paired with another exactly like it.

    • C. 

      The process is known as semiconservative replication because one old strand is conserved in the new molecule.

    • D. 

      The enzyme that catalyzes DNA replication is DNA polymerase.

    • E. 

      Complementary base pairs are held together with hydrogen bonds.


  • 12. 
    Because one original strand of the double stranded helix is found in each daughter cell,  the replication process is called

  • 13. 
    Which does Not describe a function of the DNA polymerase molecule?
    • A. 

      Recognize the free nucleotide that pairs with the base on the template strand of DNA

    • B. 

      Read the strand of template DNA and recognize the base there

    • C. 

      Proofread to ensure that the proper base has been incorporated

    • D. 

      Make the proper nucleotide to match with the base read on the template strand

    • E. 

      Cut out an improperly paired nucleotide and replace it with the proper one


  • 14. 
    . Which statement is Not true about DNA replication?
    • A. 

      ) It proceeds in a 5' to 3' direction only

    • B. 

      One strand of new DNA is replicated faster than the other strand at the replication fork.

    • C. 

      DNA can only replicate at one point on a chromosome at one time.

    • D. 

      It occurs more rapidly in bacteria than in eukaryotes.

    • E. 

      Replication can only begin at a special origin of replication.


  • 15. 
    Which statement is Not true about DNA replication in prokaryotes?
    • A. 

      Replication begins at a single origin of replication.

    • B. 

      Replication is bidirectional from the origin(s).

    • C. 

      Replication occurs at about 1 million base pairs per minute.

    • D. 

      Since bacterial cells replicate so rapidly, a second round of replication may begin before the first has completed.

    • E. 

      There are numerous different bacterial chromosomes, with replication occurring in each at the same time.


  • 16. 
    The two strands of a DNA molecule are held together by

  • 17. 
    According to the base pairing rules, guanine binds with

  • 18. 
    During DNA replication, the enzyme DNA polymerase

  • 19. 
    If the sequence of nucleotides in one chain of a DNA molecule is T-C-A-A-G-C, a new nucleotide chain will be produced during replication with the complementary sequence

  • 20. 
    Complementary base pairing links

  • 21. 
    Damage to DNA is usually repaired by

  • 22. 
    During replication, the two strands of DNA separate at a point called a(n)

  • 23. 
    Each nucleotide in a DNA molecule is constructed of

  • 24. 
    What bases are pyrimidines?

  • 25. 
    What base is not found in DNA

  • 26. 
    The diameter of the DNA ladder is always

  • 27. 
    Each complete turn of the DNA helix is how long?

  • 28. 
    The structure of DNA is most like a

  • 29. 
    Griffith did an experiment in which live R bacteria was changed by dead S bacteria. Such a change is an example of

  • 30. 
    Chargaff's rule states that in DNA, the amount of adenine equals

  • 31. 
    Rosalind Franklin helped reveal the structure of DNA by using

  • 32. 
    Which is Not a characteristic of DNA?
    • A. 

      cytosine

    • B. 

      Long strands of nucleotides

    • C. 

      A "backbone" of sugar and phosphate

    • D. 

      Uracil

    • E. 

      Double helix


  • 33. 
    The direction of replication of DNA is

  • 34. 
    . If a change is made when DNA copies itself, a ________ results.

  • 35. 
    Today, it is most appropriate to state that a gene controls

  • 36. 
    Which of the classes of RNA molecules carries the genetic information as it is needed for the construction of a protein?

  • 37. 
    Which of the following classes of RNA molecules carries the amino acids that are added to the growing polypeptide chain?

  • 38. 
    Which of the following classes of RNA molecules is found in almost no prokaryotes?

  • 39. 
    Which of the following classes of RNA molecules is linked with proteins in forming the large and small subunits of a cytoplasmic structure?

  • 40. 
    Prior to protein synthesis, the DNA

  • 41. 
    Which of the following classes of RNA molecules is never found in the cytosol

  • 42. 
    The first codon to be deciphered was _______, which codes for ______.

  • 43. 
    Transcription of a part of a DNA molecule with a nucleotide sequence of A-A-A-C-A-A-C-T-T results in a mRNA molecule with the complementary sequence of

  • 44. 
    Which is the process that synthesizes mRNA, tRNA, or rRNA

  • 45. 
    Which of the following nucleotide bases is found only in RNA, not in DNA?

  • 46. 
    Which of the following nucleotide bases is found only in DNA, not in RNA?

  • 47. 
    An intervening sequence in a eukaryotic gene that is not an active part of the gene is called a(n)

  • 48. 
    A ribozyme is

  • 49. 
    Which is the process by which a protein is constructed?

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