Q. Select the correct statement from the following regarding cell membrane
A) Fluid mosaic model of cell membrane was proposed by Singer and Nicolson
B) Na+ and K+ ions move across cell membrane by passive transport
C) Proteins make up 60 to 70% of the cell membrane
D) Lipids are arranged in a bilayer with polar heads towards the inner part
Explanation
[Solution from source] The fluid mosaic model of the cell membrane was proposed by Singer and Nicolson in 1972. Na⁺ and K⁺ are moved by active transport (Na⁺/K⁺ pump), proteins form about half (not 60–70%) of the human RBC membrane, and lipid polar heads face outwards with the tails inside. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.