Which chemicals flow most freely across a cell membrane?
A) proteins, fats, and carbohydrates
B) positively charged ions
C) water, oxygen, and carbon dioxide
D) calcium and magnesium

Question

Quizplus · Accepted Answer

Water, oxygen, and carbon dioxide are small and non-polar molecules that are able to easily pass through the phospholipid bilayer of a cell membrane through simple diffusion.

Which Chemicals Flow Most Freely Across a Cell Membrane