DNA & RNA Key Terms Quiz
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Questions and Answers

Which monosaccharide is a key source of energy and can also be polymerized to form cellulose?

  • Glucose (correct)
  • Maltose
  • Lactose
  • Sucrose

    • What elements do all carbohydrates contain?

  • Carbon, hydrogen, nitrogen
  • Carbon, hydrogen, oxygen (correct)
  • Carbon, phosphorus, oxygen
  • Carbon, nitrogen, oxygen

    • How do isomers of glucose differ?

  • They have different numbers of carbon atoms
  • They have the same formula but different structural arrangements (correct)
  • They have different functional groups
  • They have different molecular weights

    • What is the general formula for a monosaccharide?

    <p>CnH2nOn</p> Signup and view all the answers

    Which element is NOT found in all carbohydrates?

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

    What type of bond is formed between two monosaccharides to create a disaccharide?

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

    What structural difference distinguishes α glucose from β glucose?

    <p>Rearrangement of hydrogen and hydroxyl group at carbon 1</p> Signup and view all the answers

    'Deoxyribose sugar' is commonly found in which biological macromolecule?

    <p>'Deoxyribose sugar' is found in DNA</p> Signup and view all the answers

    'Phosphodiester bond' is commonly associated with linking which molecules together?

    <p>'Phosphodiester bond' links nucleotides in DNA and RNA</p> Signup and view all the answers

    Why does benzene have a lower electron density than C=C?

    <p>Benzene has delocalized electrons in its pi bonds.</p> Signup and view all the answers

    Why does bromine experience a weaker induced dipole in the presence of benzene compared to an alkene?

    <p>Benzene has a higher electron density than an alkene.</p> Signup and view all the answers

    Why is methylbenzene less toxic than benzene?

    <p>The methyl group releases electrons into the delocalized system of benzene.</p> Signup and view all the answers

    What is the key importance of the nitration of benzene?

    <p>It forms explosive compounds like TNT.</p> Signup and view all the answers

    In the nitration of benzene, what acts as the electrophile?

    <p>NO2+</p> Signup and view all the answers

    What are the reagents required for the nitration of benzene?

    <p>Concentrated nitric acid and sulfuric acid</p> Signup and view all the answers

    What functional group is added to benzene during nitration to form nitrobenzene?

    <p>-NO2</p> Signup and view all the answers

    Why is the nitration of benzene considered an electrophilic substitution reaction?

    <p>-NO2 acts as an electrophile during the reaction.</p> Signup and view all the answers

    At what temperature is the nitration of benzene typically carried out?

    <p>-60°C</p> Signup and view all the answers

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