Question

Select the correct statement from the following regarding cell membrane:

• A. Lipids are arranged in bilayer with polar heads towards the inner part
• B. Fluid mosaic model of cell membrane was proposed by Singer and Nicholson
• C. $N{a}^{+}$ and $K^{+}$ ions move across cell membrane by passive transport
• D. Proteins make up 60 to 70% of the cell membrane

Answer 1

The correct option is B Fluid mosaic model of cell membrane was proposed by Singer and Nicholson

We know that the Fluid Mosaic Model of the Plasma membrane was proposed by Singer and Nicholson.
According to the model, the lipids are arranged in a bilayer with their polar heads facing outwards.
Ions move across the cell membrane with the help of integral proteins. But they do not move through passive transport.
Cell membrane is made up of about 52% protein, 40% lipids.