A) Singer and Tatum
B) Watson
C) Robertson
D) Singer and Nicolson
Correct Answer: D
Solution :
Fluid mosaic model of cell membrane is most advanced and latest model given by Singer and Nicolson in 1974. According to this model, membrane is composed of lipid bimolecular layer, outside this layer extrinsic (peripheral) proteins are present. Other type of proteins are present partially outside and partially inside the lipid layer or completely inside the lipid layer, known as intrinsic or integral proteins. Integral proteins and lipids occur in fluid mosaic form. Unit membrane model was proposed by Robertson. Watson and Crick gave double helical structural model of DNA Beadle and Tatum proposed One gene-one enzyme hypothesis.
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