Biomolecules

Short Answer Type

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How are vitamins classified? Name the vitamin responsible for the coagulation of blood.

Vitamins are classified into two groups depending upon their solubility in water or fat.
i) Fat soluble vitamins: Vitamins which are soluble in fat and oils but insoluble in water. These are Vitamins A, D, E, and K.
ii) Water soluble vitamins: Vitamins which are soluble in water. These are B group vitamin and vitamin C.

Vitamin K is responsible for the coagulation of blood.

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    What are essential and non-essential amino acid? Give two examples of each type.

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    Long Answer Type

    Define the following as related to proteins:
    (i) Peptide linkage     (ii) Primary structure    (iii) Denaturation. 

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    Short Answer Type

    What are the common types of secondary structure of proteins?

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    Differentiate between globular and fibrous proteins. 

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    How do you explain the amphoteric behaviour of amino acids?

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    What is the effect of denaturation on the structure of proteins?

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    Why are vitamin A and vitamin C essential to us? Give their important sources.

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    What are nucleic acids? Mention their two important functions.

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    What is the difference between a nucleoside and a nucleotide?

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