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    Which of the following pairs is NOT correctly matched?
    Question

    Which of the following pairs is NOT correctly matched?

    A.

    Enzyme - Pepsin

    B.

    Vitamin - Biotin

    C.

    Polymer - RNA

    D.

    Hormone - Cholesterol

    Correct option is D

    Option (a) is correctly matched. Pepsin is an enzyme that breaks down proteins in the stomach.
    Option (b) is correctly matched. Biotin is a type of Vitamin B (Vitamin B7).
    Option (c) is correctly matched. RNA (Ribonucleic Acid) is a polymer made up of nucleotides.
    Option (d) is NOT correctly matched. Cholesterol is not a hormone; it is a type of lipid or fat. Hormones are chemical messengers, and examples include insulin, adrenaline, and estrogen.

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