Roles of Nucleotides in Cellular Processes Quiz
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Questions and Answers

What are the components of nucleic acids?

  • Starch, cellulose, glycogen
  • Sugar, nitrogen base, phosphate (correct)
  • Lipid, protein, carbohydrate
  • Amino acid, fatty acid, water

    • What are the major co-enzymes that contain adenine nucleotides?

  • SAM, UDP-glucose
  • NAD, FAD, CoA (correct)
  • DNA, RNA, tRNA
  • ATP, GTP, cAMP

    • Which nucleotide is known for serving as a major energy currency in cells?

  • ATP (correct)
  • FAD
  • GTP
  • NAD

    • What are the nitrogen bases found in DNA and RNA?

    <p>Pyrimidines C, T, and U</p> Signup and view all the answers

    Which nucleotide derivative is an activated intermediate in biosynthetic processes?

    <p>UDP-glucose</p> Signup and view all the answers

    What is the role of nucleotides in cell signaling activation?

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

    What are the nitrogen bases found in both DNA and RNA?

    <p>Guanine (G) and Cytosine (C)</p> Signup and view all the answers

    Which sugar is present in DNA but not in RNA?

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

    What is the nitrogen base pair present in DNA but absent in RNA?

    <p>Adenine (A) and Thymine (T)</p> Signup and view all the answers

    What is the structure formed when a nucleoside bonds to phosphoric acid?

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

    How are nucleosides named based on their components?

    <p>Using names ending in -osine for pyrimidines and -idine for purines</p> Signup and view all the answers

    What differentiates the pentose sugar in DNA from that in RNA?

    <p>Presence of an oxygen atom at carbon 2’</p> Signup and view all the answers

    In the primary structure of nucleic acids, how are nucleotides joined together?

    <p>By phosphodiester bonds</p> Signup and view all the answers

    Which group in a nucleotide forms an ester bond with the phosphate group of the next nucleotide?

    <p>3’-OH group</p> Signup and view all the answers

    Which nucleotide has the abbreviation 'dCMP'?

    <p>Deoxycytosine monophosphate (dCMP)</p> Signup and view all the answers

    What kind of bond links nucleotides in the primary structure of nucleic acids?

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

    What type of bonds link nucleotides in DNA?

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

    Which end of a nucleic acid has a free 5’-phosphate group?

    <p>5’-end</p> Signup and view all the answers

    In RNA, which bases are linked by phosphodiester bonds?

    <p>A, C, G, U</p> Signup and view all the answers

    How many hydrogen bonds form between the base pairs A-T in DNA?

    <p>Two hydrogen bonds</p> Signup and view all the answers

    What forms the structure of the DNA double helix?

    <p>Two strands of nucleotides winding together</p> Signup and view all the answers

    Which bases are always linked by three hydrogen bonds in DNA?

    <p>Adenine and Cytosine (A-C)</p> Signup and view all the answers

    What happens to the bases along one strand in a DNA double helix?

    <p>They complement the bases along the other strand</p> Signup and view all the answers

    In DNA replication, what is maintained each time a cell divides?

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

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