Carbohydrates Classification
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Questions and Answers

What is the characteristic feature of a pyranose?

  • It is a six-membered ring monosaccharide (correct)
  • It is a five-membered ring monosaccharide
  • It is a type of triose
  • It is a type of heptose
  • What determines the degree of sweetness of various sugars?

  • The number and arrangement of hydroxyl groups in their molecular structure (correct)
  • The number and arrangement of methyl groups in their molecular structure
  • The number of carbon atoms in the sugar molecule
  • The type of ring structure formed by the sugar molecule
  • What is the name of the simplest sugar?

  • Fructose
  • Glyceraldehyde (correct)
  • Glucose
  • Galactose
  • What is the term for a five-membered ring monosaccharide?

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

    What is the most abundant naturally-occurring carbohydrate?

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

    What is the configuration assumed by pyranose sugars due to the tetrahedral nature of carbon bonds?

    <p>Chair or boat</p> Signup and view all the answers

    What is the result of the reaction between the C1 aldehyde and C5 -OH in glucose?

    <p>Formation of a 6-member pyranose ring</p> Signup and view all the answers

    What is the type of ring formed in fructose when the C2 keto group reacts with the OH on C5?

    <p>5-member furanose ring</p> Signup and view all the answers

    What is the term for the two stereoisomers formed during cyclization of glucose?

    <p>Anomeric isomers</p> Signup and view all the answers

    What is the characteristic of aldehyde sugars that makes them readily oxidized?

    <p>Ability to react with Benedict's reagent</p> Signup and view all the answers

    What is the purpose of sugar alcohols in food processing?

    <p>To improve the shelf life of food by preventing moisture loss</p> Signup and view all the answers

    What is the result of the reduction of sugars?

    <p>Yields the sugar alcohols (alditols)</p> Signup and view all the answers

    What percentage of sucrose is equivalent to the sweetness of galactose?

    <p>33</p> Signup and view all the answers

    What is the classification of oligosaccharides based on the number of monosaccharide units?

    <p>Trisaccharide: 3 monomers, Tetrasaccharide: 4 monomers</p> Signup and view all the answers

    What are the components of raffinose?

    <p>Galactose + glucose + fructose</p> Signup and view all the answers

    What is the composition of stachyose?

    <p>2 galactoses + glucose + fructose</p> Signup and view all the answers

    What is the term for oligosaccharides that are not digestible by humans?

    <p>Non-digestible oligosaccharides (NDOs)</p> Signup and view all the answers

    What is verbascose composed of?

    <p>3 galactoses + glucose + fructose</p> Signup and view all the answers

    Which disaccharide is derived from sweet potatoes?

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

    What is the relative sweetness of fructose compared to sucrose?

    <p>1.73</p> Signup and view all the answers

    Which of the following is NOT a natural source of sucrose?

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

    What is the bond type between the monosaccharide constituents in cellobiose?

    <p>β, (1, 4)</p> Signup and view all the answers

    What is the relative sweetness of lactose compared to sucrose?

    <p>0.16</p> Signup and view all the answers

    What is the primary function of starch in plants?

    <p>Energy storage</p> Signup and view all the answers

    Which of the following polysaccharides is classified based on its monosaccharide unit as galactose?

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

    What is the term for a polysaccharide chain with a straight chain of monosaccharides?

    <p>Linear polysaccharide</p> Signup and view all the answers

    What is the primary source of starch in our diet?

    <p>Cereals, potatoes, corn, and rice</p> Signup and view all the answers

    What determines the functionality of polysaccharides?

    <p>The arrangement of monomers in the polysaccharide</p> Signup and view all the answers

    What type of polysaccharide is glycogen?

    <p>Branched polysaccharide</p> Signup and view all the answers

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