Which one of the following molecules is able to move across the cell membrane by simple diffusion?
A) DNA
B) hemoglobin
C) carbon dioxide
D) glucose
E) starch

Question

Quizplus · Accepted Answer

Carbon dioxide is a small, nonpolar molecule, which allows it to easily pass through the lipid bilayer of the cell membrane by simple diffusion without the need for energy or transport proteins.

Which One of the Following Molecules Is Able to Move