NEET Botany Biology Biomolecules MCQs

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    NEET Questions / Botany / Biology Biomolecules

    2.

    Inulin, a storage polysaccharide found in some plants, differs from starch in several key aspects. Which of the following statements accurately describes a major difference between inulin and starch?

    A

    Inulin is a branched polymer, while starch is strictly linear.

    B

    Inulin is primarily found in animals, while starch is found in plants.

    C

    Inulin forms a helical structure, while starch forms a sheet-like structure.

    D

    Inulin is composed of fructose units linked by ฮฒ(2โ†’1) glycosidic bonds, while starch primarily consists of glucose units linked by ฮฑ(1โ†’4) and ฮฑ(1โ†’6) bonds.

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    6.

    Why doesn't cellulose react with iodine to produce a blue color?

    A

    It lacks the helical structure necessary for iodine complexation.

    B

    It contains fructose units instead of glucose.

    C

    It is a branched polymer and cannot interact with iodine.

    D

    It is insoluble in water, preventing the reaction with iodine.

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    8.

    Iodine forms a blue color complex with starch but not with cellulose. This difference is primarily due to:

    A

    The presence of branching in cellulose.

    B

    The higher molecular weight of cellulose.

    C

    Difference in glycosidic linkages and resulting structural conformations.

    D

    The different monomer composition of cellulose and starch.

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