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Nucleic Acids and Nucleotides: DNA and RNA
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Nucleic Acids and Nucleotides: DNA and RNA

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Questions and Answers

What is the chemical basis of heredity?

  • Ribonucleic acid
  • DNA (correct)
  • Deoxyribonucleotides
  • RNA
  • Who discovered DNA in 1869?

  • Johann Friedrich Miescher (correct)
  • Avery
  • MacLeod
  • MacCary
  • What is the primary function of nucleic acids?

  • Synthesize proteins in the cell
  • Control every cellular function
  • Serve as repositories and transmitters of genetic information (correct)
  • Maintain the identity of different species
  • What are genes?

    <p>Fundamental units of genetic information</p> Signup and view all the answers

    What is the central dogma of molecular biology?

    <p>DNA controls the synthesis of RNA and proteins.</p> Signup and view all the answers

    Who first demonstrated that DNA contained genetic information?

    <p>Avery, Macleod, and MacCary</p> Signup and view all the answers

    What holds the DNA molecules together in a double helix structure?

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

    Which nitrogenous base is found in both DNA and RNA?

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

    What differentiates DNA from RNA in terms of pyrimidine bases?

    <p>DNA contains thymine and RNA contains cytosine.</p> Signup and view all the answers

    What is the term for the molecule's existence in keto and enol forms?

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

    Which compound serves as the energy currency in cells?

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

    What does a nucleoside refer to?

    <p>Base + sugar</p> Signup and view all the answers

    Which type of compounds are the nitrogenous bases found in nucleotides?

    <p>Aromatic compounds</p> Signup and view all the answers

    What are the major purines found in DNA and RNA?

    <p>Adenine and guanine</p> Signup and view all the answers

    What is the correct order of nucleotide components?

    <p>Nucleobase, sugar, phosphate.</p> Signup and view all the answers

    Which molecule controls the synthesis of RNA and proteins?

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

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