In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: A cell membrane shows fluid behavior. Reason: A membrane is a mosaic or composite of diverse lipids and proteins.A) 1
B) 2
C) 3
D) 4
Correct Answer: A
Solution :
With the help of freeze-fracture techniques electron microscopy, the fluid mosaic Model was put forward in 1970 by S.J. Singer G.L. Nicolson. According to this model p membrane is composed of phospho? extrinsic proteins (peripheral proteins) intrinsic proteins (integral proteins). Selective permeability of plasma membrane can explained with this model.
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