Question

carbon dioxide (co₂) is created by cells all over the body as a waste product. it is a small nonpolar molecule. carbon dioxide exits cells by moving across cell membranes using a form of passive transport called simple diffusion. this video shows the simple diffusion of carbon dioxide molecules. the diffusion of carbon dioxide is called simple because carbon dioxide can diffuse directly through the phospholipid bilayer without assistance. select the true statements. carbon dioxide crosses the cell membrane in both directions. diffusion is a form of active transport. carbon dioxide can move across cell membranes via simple diffusion because it is small and nonpolar. simple diffusion is the unassisted diffusion of molecules directly through the phospholipid bilayer.

Explanation:

• CO₂ can cross cell - membrane bidirectionally.
• It diffuses simply due to small non - polar nature.
• Simple diffusion is unassisted through lipid bilayer. Diffusion is passive, not active.

Answer:

A. Carbon dioxide crosses the cell membrane in both directions.
C. Carbon dioxide can move across cell membranes via simple diffusion because it is small and nonpolar.
D. Simple diffusion is the unassisted diffusion of molecules directly through the phospholipid bilayer.