Small lipid soluble molecules would move through the plasma membrane by
A)diffusion.
B)osmosis.
C)filtration.
D)pumping.

Question

Quizplus · Accepted Answer

Small lipid soluble molecules can diffuse through the phospholipid bilayer of the plasma membrane without the need for any protein channels or pumps. Osmosis is the movement of water molecules across a membrane from an area of high concentration to an area of low concentration, and filtration involves the movement of molecules through a selectively permeable membrane due to pressure gradients. Pumping requires the use of specific proteins to move molecules against their concentration gradient.

Small Lipid Soluble Molecules Would Move Through the Plasma Membrane