CO₂ is a small,non-polar molecule.It will cross the cell membrane by
A)simple diffusion.
B)diffusion through a channel.
C)active transport.
D)diffusion using a pump.

Question

Quizplus · Accepted Answer

CO₂ is a small, non-polar molecule that can diffuse easily through the lipid bilayer of the cell membrane without the need for a specific protein channel or active transport mechanism. Therefore, the correct choice is simple diffusion.

CO₂ Is a Small,non-Polar Molecule