NEET Biology Cell - The Unit Of Life Question Bank Self Evaluation Test - Cell - The Unit of Life

  • question_answer
    According to Danielli and Davson, the phospholipid bilayer is covered on either side by:
    (i) Hydrated globular proteins
    (ii) a-globular proteins
    (iii) (3-globular proteins
    (iv) Only spectrin protein with sialic acid

    A) (i) and (ii)       

    B)        (ii) and (iii)

    C) (iii) and (iv)       

    D) (i) and (iv)

    Correct Answer: A

    Solution :

    [a] Danielli and Davson says that biomembrane contains four molecular layers, two of phospholipid and two of proteins. Phospholipid form a double bilayer. The phospholipid bilayer is covered on either side by a layer of hydrated globular or a-protein molecules.


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