Carbohydrate Polymers Quiz
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Questions and Answers

Why do organisms need to store glucose as a polymer that does not dissolve in water?

  • To prevent glucose from being lost through osmosis.
  • To prevent glucose from being transported out of cells.
  • To allow for efficient storage of glucose. (correct)
  • To keep the glucose from reacting with other molecules.

    • What is the purpose of the Iodine test for starch?

  • To determine the amount of glucose present in a sample.
  • To measure the concentration of water in a sample.
  • To test for the presence of the enzyme amylase.
  • To identify the presence of starch in a sample. (correct)

    • Which of the following is NOT a carbohydrate polymer?

  • Glycogen
  • Protein (correct)
  • Cellulose
  • Chitin

    • Which of the following best describes why glucose is important for respiration?

    <p>Glucose provides the energy needed for respiration. (B)</p> Signup and view all the answers

    What is the monomer that makes up starch?

    <p>Glucose (B)</p> Signup and view all the answers

    Which of the following is a polysaccharide used for storing carbohydrates in animals?

    <p>Glycogen (C)</p> Signup and view all the answers

    What is the main function of cellulose?

    <p>To provide structural support to plant cell walls (A)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of glucose?

    <p>It is a polymer made of many amino acids. (A)</p> Signup and view all the answers

    Flashcards

    Monomer in Carbohydrates

    Glucose is the basic monomer unit of carbohydrates.

    Carbohydrate Polymer

    A carbohydrate made of multiple sugar monomers, like starch or glycogen.

    Starch

    A polysaccharide used by plants to store carbohydrates.

    Glycogen

    A polysaccharide that serves as a carbohydrate store in animals and fungi.

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    Cellulose

    A polysaccharide that strengthens plant cell walls.

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    Chitin

    A polysaccharide that strengthens fungal cell walls.

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    Iodine Test for Starch

    A method to detect starch using iodine solution that changes color.

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    Water Solubility of Glucose

    Glucose dissolves in water; hence, it is stored as a non-soluble polymer.

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    Study Notes

    Carbohydrate Polymers

    • Glucose is the monomer of carbohydrates
    • Carbohydrates store glucose as polymers that are insoluble in water
    • Starch is a carbohydrate polymer stored in plants.
    • Glycogen is a carbohydrate polymer stored in animals and fungi.
    • Cellulose strengthens plant cell walls.
    • Chitin strengthens fungi cell walls.
    • Peptidoglycan (Murein) strengthens bacterial cell walls.

    Carbohydrate Storage

    • Fungi, plants, and animals store carbohydrates in different ways.
    • Starch is a storage form of glucose in plants.
    • Glycogen is a storage form of glucose in animals and fungi.

    Testing for Starch

    • Use iodine solution to test for starch
    • The test solution is called lodine Solution.
    • A negative result is orange/brown in colour.
    • A positive result is blue/black in colour.

    General Notes

    • Prepare food samples for testing as instructed.
    • Place a sample on a spotting tile
    • Add 2-3 drops of iodine solution to the sample.
    • Observe the colour change.
    • Use CORMS when designing or planning experiments.
    • Use the correct method when describing an experiment.
    • Complete the "Science Progress tracker" for the movement of molecules test.
    • Check the tracker in the assignments given through teams.

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    Related Documents

    Starch Iodine Solution - Science - Practice Questions PDF

    Description

    Test your knowledge on carbohydrate polymers, their structures, and storage mechanisms in various organisms. This quiz covers essential topics such as starch, glycogen, cellulose, and the iodine test for starch detection. Prepare to explore the fascinating world of carbohydrates!

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