Carbohydrate Structure and Function
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Questions and Answers

Where is glycogen typically found in hepatocytes?

  • Mitochondria
  • Large chloroplasts
  • Nucleus
  • Cytosol (correct)

    • What is the approximate diameter of a glycogen molecule?

  • 1000 nm
  • 10 nm
  • 21 nm (correct)
  • 100 nm

    • What is the primary function of cellulose in plants?

  • Photosynthesis
  • Energy storage
  • Structural support (correct)
  • Transportation of nutrients

    • What is the characteristic feature of amylose?

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

    How are glycogen and amylopectin similar?

    <p>Both have branch points formed by α1→6 glycoside bonds</p> Signup and view all the answers

    What is the function of dextrans in dental plaque?

    <p>Forming dental plaque</p> Signup and view all the answers

    What is the orientation of the carbon group at carbon 1 in a furanose ring?

    <p>In the opposite direction of the OH group</p> Signup and view all the answers

    What is the primary function of starch and glycogen in cells?

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

    What is the approximate percentage of glycogen in the wet weight of liver cells?

    <p>7% to 12%</p> Signup and view all the answers

    Which of the following is a characteristic of amylose?

    <p>Long, unbranched chains of glucose residues</p> Signup and view all the answers

    What is the type of linkage found at the branch points in glycogen?

    <p>(1 → 6) linkage</p> Signup and view all the answers

    In which type of cells is glycogen especially abundant?

    <p>Both skeletal muscle cells and liver cells</p> Signup and view all the answers

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

    <p>The orientation of the —H and —OH groups around the carbon atom adjacent to the terminal alcohol carbon</p> Signup and view all the answers

    What is the property of glucose that causes it to rotate a beam of plane polarized light to the right?

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

    What is the term used to describe the glucose solutions that rotate a beam of plane polarized light to the right?

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

    How many isomers of glucose can be formed due to its four asymmetric carbon atoms?

    <p>16</p> Signup and view all the answers

    What is the characteristic of the enzymes responsible for the metabolism of naturally occurring monosaccharides?

    <p>They are specific for the D configuration</p> Signup and view all the answers

    Which type of anomer occurs when the OH on the anomeric carbon is trans to carbon 6?

    <p>Alpha anomer</p> Signup and view all the answers

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