Carbohydrates: Classification and General Characteristics
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Questions and Answers

What is the empirical formula for carbohydrates composed of C, H, and O?

  • (C5H10O5)5
  • (CHO)5
  • (CH3O)5
  • (CH2O)5 (correct)
  • Which functional groups can carbohydrates contain?

  • Alkene group
  • Aldehyde group or keto group (correct)
  • Nitro group
  • Carboxylic acid group
  • What is the simplest aldose sugar?

  • Ribose
  • Galactose
  • Glucose
  • Lactose
  • D-glyceraldehyde (correct)
  • How are monosaccharides classified according to the number of carbon atoms?

    <p>By the number of carbon atoms</p> Signup and view all the answers

    What is the general term for compounds that have a large number of hydroxyl groups?

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

    Which type of carbohydrates are classified as either homopolysaccharides or heteropolysaccharides?

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

    Which type of isomerism determines whether a sugar belongs to the D or L series?

    <p>Optical isomerism</p> Signup and view all the answers

    Which monosaccharide naturally occurs in the L form?

    <p>L-Arabinose</p> Signup and view all the answers

    What confers optical activity on a compound?

    <p>Presence of asymmetric carbon atoms</p> Signup and view all the answers

    What causes isomers differing in configuration at carbons 2, 3, or 4 of glucose?

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

    Which type of isomerism produces isomers differing by the orientation of –OH groups around only one of the middle asymmetric carbons?

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

    Which sugar naturally occurs in the D(–) isomeric form?

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

    What determines whether a sugar belongs to the D or L series?

    <p>-OH position on carbon 5</p> Signup and view all the answers

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