The cell membrane controls the traffic of molecules into and out of the cell, prevents the entry of toxic material into the cell and permits selective uptake of nutrients. Which property of the membrane can this be attributed to?

Question

anonymous · Answer

A) Carbohydrates present on the membrane
B) Lipid bilayer of the membrane
C) Membrane fluidity
D) Semi-permeable nature of the membrane

anonymous · Answer

what do you think would be correct answer from what you know about the membrane?

anonymous · Answer

D, since it is semi-permeable then it will be able to control what enters and leaves.

anonymous · Answer

the cell membrane is a bi-layer its outer surface is hydrophilic and inner surface is hydrophbic so the substances that pass through it have  to be sufficiently hydrophobic and hydrophilic in order to pass it and it also has small openings  in it which allows the free exchange