AIPMT 2012 Biology Solved Paper

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Question : 94 of 100

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Select the correct statement from the following regarding cell membrane.

Na+and K+ions move across cell membrane by passive transport
Proteins make up 60 to 70% of the cell membrane.
Lipids are arranged in a bilayer with polar heads towards the inner part.
Fluid mosaic model of cell membrane was proposed by Singer and Nicolson

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