Unit 3b: DNA And The Central Dogma

25 Questions | Total Attempts: 1463

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Unit 3b: DNA And The Central Dogma - Quiz

Questions and Answers
  • 1. 
    Which of the following is a pair of complementary bases?
    • A. 

      Cytosine and cytosine

    • B. 

      Thymine and adenine

    • C. 

      Adenine and guanine

    • D. 

      Thymine and ctyosine

  • 2. 
    In a DNA molecule, which molecules make up the sides of the double helix?
    • A. 

      Single nucleotides

    • B. 

      Pairs of nucleotides

    • C. 

      Joined sugars and phosphates

    • D. 

      Joined nitrogenous bases and phosphates

  • 3. 
    If one strand of a DNA molecule reads TATCGAT, what does the complementary strand read?
    • A. 

      GCGATCG

    • B. 

      ATAGCTA

    • C. 

      CGCATCG

    • D. 

      ATAGCAT

  • 4. 
    Which of the following statements is true?
    • A. 

      The sugar molecules in each nucleotide contain genetic information.

    • B. 

      Chromosomes are contained within genes, which are contained within DNA.

    • C. 

      When DNA replicates, each strand is used to create three new strands for division.

    • D. 

      Each organism of the same species has the same number of chromosomes in each cell.

  • 5. 
    Which of the following statements about DNA and RNA is true?
    • A. 

      RNA is arranged in a double helix.

    • B. 

      The kinds of sugar in the nucleotides of DNA and RNA differ.

    • C. 

      DNA contains nitrogenous bases and phosphates, while RNA does not.

    • D. 

      DNA contains uracil, while RNA contains thymine.

  • 6. 
    Which DNA sequence produced an mRNA strand with the sequence AGUACA?
    • A. 

      UCAUGU

    • B. 

      TCATGT

    • C. 

      GUACAG

    • D. 

      CAGTAC

  • 7. 
    Transcription creates an mRNA molecule using DNA as a template. Where does this occur?
    • A. 

      Outside the cell

    • B. 

      In the cytoplasm

    • C. 

      In the nucleus

    • D. 

      In the ribosomes

  • 8. 
    The sequence of a strand of mRNA is GCATUGUAA. If the sequence includes a stop codon, how many amino acids does this code for?
    • A. 

      2

    • B. 

      3

    • C. 

      6

    • D. 

      9

  • 9. 
    What process is illustrated in the diagram?
    • A. 

      Replication

    • B. 

      Transcription

    • C. 

      Translation

    • D. 

      Mutation

  • 10. 
    What type of mutation has occured in this piece of DNA?                                Original sequence:   TACGCG                                Mutated sequence:   TCGCGT
    • A. 

      Deletion

    • B. 

      Insertion

    • C. 

      Substitution

    • D. 

      Translocation

  • 11. 
    What does the circle represent in this diagram of a nucleotide?
    • A. 

      Phosphate group

    • B. 

      Nitrogenous base

    • C. 

      Pentose sugar

    • D. 

      Adenine base

  • 12. 
    Ribosomes are made of ___.
    • A. 

      RRNA and two protein subunits

    • B. 

      TRNA and mRNA

    • C. 

      RRNA and mRNA

    • D. 

      Protein and tRNA

  • 13. 
    Watson and Crick, with the help of Rosalind Franklin, were the first to suggest that DNA is ___.
    • A. 

      A short molecule

    • B. 

      A protein molecule

    • C. 

      The shape of a double helix

    • D. 

      The genetic material

  • 14. 
    The chromosome abnormality that occurs when part of one chromosome breaks off and is added to a different chromosome is ___.
    • A. 

      Deletion

    • B. 

      Nondisjunction

    • C. 

      Translocation

    • D. 

      Inversion

  • 15. 
    Which of the following is least likely to happen as a result of a mutation in a person's skin cells?
    • A. 

      Skin cancer

    • B. 

      Reduced functioning of the skin cell

    • C. 

      No change in functioning of the skin cell

    • D. 

      The person's offspring have mutated skin cells

  • 16. 
    Messenger RNA is formed in the process of ___.
    • A. 

      Transcription

    • B. 

      Translation

    • C. 

      Replication

    • D. 

      Mutation

  • 17. 
    The process by which a DNA molecule is copied is ___.
    • A. 

      Transcription

    • B. 

      Translation

    • C. 

      Replication

    • D. 

      Mutation

  • 18. 
    Each set of three nucleotides on mRNA coding for an amino acid is referred to as a(n) ___.
    • A. 

      Codon

    • B. 

      Anticodon

    • C. 

      Ribosome

    • D. 

      Base pair

  • 19. 
    The nucleotide triplet on tRNA that complements a codon is called a(n) ___.
    • A. 

      Codon

    • B. 

      Anticodon

    • C. 

      Ribosome

    • D. 

      Base pair

  • 20. 
    Adenine is to thymine as guanine is to ___.
    • A. 

      Uracil

    • B. 

      Cytosine

    • C. 

      Adenine

    • D. 

      Thymine

  • 21. 
    DNA is to RNA as double strand is to ___.
    • A. 

      Single strand

    • B. 

      Ribose

    • C. 

      Triple strand

    • D. 

      Double helix

  • 22. 
    Transcription is to mRNA as translation is to ___.
    • A. 

      Protein

    • B. 

      Codon

    • C. 

      TRNA

    • D. 

      DNA

  • 23. 
    A(n) ___ involves the insertion or deletion of a single base in a DNA molecule.
    • A. 

      Frameshift mutation

    • B. 

      Point mutation

    • C. 

      Translocation

    • D. 

      Mutagen

  • 24. 
    A(n) ___ involves thesubstitution of a single base in a DNA molecule.
    • A. 

      Frameshift mutation

    • B. 

      Point mutation

    • C. 

      Translocation

    • D. 

      Mutagen

  • 25. 
    The term for a substance or energy form that can cause a mutation in DNA is ___.
    • A. 

      Frameshift mutation

    • B. 

      Point mutation

    • C. 

      Translocation

    • D. 

      Mutagen