Biomolecules

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RNA and DNA are collectively known as _________.

nucleic acids
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    A growing child needs more vitamin________ to produce teeth and bones.

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    In polysaccharides, the monosaccharides are linked together by __________linkages.

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    The amino acids in a polypeptide chain are joined head to tail by __________ bonds. 

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    True Or False

    State whether the following statements are True or False

    A.

    i) Vitamin D helps in the absorption of calcium and phosphorus from the diet.

    B.


    ii)All carbohydrates are called sugars.

    C.


    iii) Mutation in DNA occurs due to changes in the sequence of the nitrogenous bases of nucleic acids.

    D.


    iv) The coagulation of egg while on boiling of egg protein is an example of irreversible protein denaturation.

    E.


    v) Avitaminoses is a condition associated with excess of vitamin present.
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    State whether the following statements are True or False

    A.

    Glucose, maltose and lactose are examples of reducing sugars.

    B.

    Glucose and fructose both forms the same osazone.

    C.

    On hydrolysis, sucrose yields a mixture of D(+) glucose and D(-) fructose.

    D.

    In disaccharides, two monosaccharides are joined together by glycoside bonds.

    E.

    The amino acids which are part of proteins have L-configuration.
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    Fill In the Blanks

    An equimolar mixture of glucose and fructose is called _________.
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    _________ results due to the alteration of genetic code contained in DNA molecule.

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    Loss of biological activity of proteins is called _________.

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    ___________ and ___________ bases are found un nucleic acids.

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