MCAT Question of the Day
    •

    Q:

    		 The pungent smell of burning hair is due to the large concentration of sulfur in keratin. Which of the following describes the role of the sulfur?
    		 

    A

    		 It is concentrated in hair along with other environmental toxins.

    B

    		 It is present in disulfide bridges in keratin.

    C

    		 It is part of the carbohydrate structure of the hair.

    D

    		 It acts as a pigment for the keratin in the hair.



    Protein Structure and Function | Intermolecular Forces |
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