Nitrous Oxide Gas Molecules Diffusing Across a Cell's Plasma Membrane

Question

Nitrous oxide gas molecules diffusing across a cell's plasma membrane is an example of
A)diffusion across the lipid bilayer.
B)facilitated diffusion.
C)active transport.
D)osmosis.
E)cotransport.

Accepted Answer

Nitrous oxide gas is a small, nonpolar molecule that is able to diffuse freely across the lipid bilayer of a cell's plasma membrane without the need for a transport protein or energy input. This process is known as simple diffusion, which is a type of passive transport.