Question

9. The hydrophobic interior of the lipid bilayer is largely responsible for controlling the movement ofa. small non-polar molecules.b. sodium ions.c. carbon dioxide.d. oxygen.e. water.

Answer 1

The cell membrane is a lipid bilayer with a hydrophilic exterior and a hydrophobic interior is a fluid membrane that allows the movement of different molecules, along the membrane but also through it.

Some molecules that can pass through the membrane are small hydrophobic molecules, such as small non-polar molecules (A); in contrast, ions and polar molecules can't cross the membrane.