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Who gave the lamellar or sandwich model ...

Who gave the lamellar or sandwich model of cell membrane ?

A

Singer and Nicolson

B

Danielli and Davson

C

J.Robertson

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B

In 1935, Danielli and Davson proposed that cell membrane is made of a double layer of phospholipid molecules sandwiched between two single layers of proteins. The three layers are held together by electrostatic forces while phospholipid layers are kept adhered by vander Waal's forces.
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Knowledge Check

  • The carbohydrate molecules of cell membrane are:

    A
    Long chain polysaccharides
    B
    Short chain polysaccharides
    C
    Long chain glyco proteins
    D
    Short chain glycolipids.
  • The major structural component of cell membrane is _____

    A
    glucolipids
    B
    phospholipids
    C
    proteolipids
    D
    triglycerides
  • Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other____

    A
    Neither lipid nor proteins can flip-flop
    B
    Both lipid and proteins can flip-flop
    C
    While lipids can rarely flip-flop proteins cannot
    D
    While proteins can flip-flop lipids cannot
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