Which substance passes most readily into a cell?
A)ions
B)large molecules
C)glucose
D)carbon dioxide
E)polar molecules

Question

Quizplus · Accepted Answer

Carbon dioxide is a small and nonpolar molecule that can easily pass through the cell membrane via diffusion. Ions and large molecules require specialized transport proteins to cross the cell membrane, polar molecules face difficulty as cell membranes are composed of nonpolar fatty acid chains, and glucose requires a special transport protein called a glucose transporter.

Which Substance Passes Most Readily into a Cell