Biochemistry of Nucleic Acids Lecture Quiz
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Questions and Answers

What are the two main classes of nucleic acids?

  • Purines and pyrimidines
  • Thymine and cytosine
  • Adenine and guanine
  • Ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) (correct)

    • What does DNA encode?

  • A mixture of organic bases
  • An organism’s entire hereditary information (correct)
  • The synthesis of all proteins
  • The growth and division of cells

    • What is the main information-carrying molecule of the cell?

  • Phosphoric acid
  • Proteins
  • Nucleic acids (correct)
  • Sugars

    • Which type of sugar is present in RNA?

    <p>D-ribose</p> Signup and view all the answers

    What determines the inherited characteristics of every living thing?

    <p>Nucleic acids</p> Signup and view all the answers

    What links the sugars in both RNA and DNA?

    <p>Phosphoric acid</p> Signup and view all the answers

    What is the name of a compound containing a base bonded to D-ribose or to 2-deoxy-D-ribose?

    <p>Nucleoside</p> Signup and view all the answers

    In which type of linkage are the purines and pyrimidines bonded to the anomeric carbon of the furanose ring?

    <p>-glycosidic linkage</p> Signup and view all the answers

    What is the name of a nucleoside with either the 5- or 3- -OH group bonded in an ester linkage to phosphoric acid?

    <p>Nucleotide</p> Signup and view all the answers

    What do the rules of base pairing state about the pairing of thymine (T) and guanine (G)?

    <p>T doesn't pair with G</p> Signup and view all the answers

    What type of bonds are formed between adenine (A) and thymine (T), and between cytosine (C) and guanine (G)?

    <p>Hydrogen bonds</p> Signup and view all the answers

    Which type of acid can form an anhydride, allowing nucleotides to exist as monophosphates, diphosphates, and triphosphates?

    <p>Phosphoric acid</p> Signup and view all the answers

    What type of bonds join the 3´-OH group of one nucleotide to the 5´-OH group of the next nucleotide in nucleic acids?

    <p>Phosphodiester bonds</p> Signup and view all the answers

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