Question

carbon dioxide molecules cross the cell membrane by simple diffusion, while potassium ions cross by facilitated diffusion. sort each statement into the correct column to compare simple and facilitated diffusion. molecules pass through proteins in the cell membrane molecules move from areas of high concentration to areas of low concentration molecules move across the cell membrane without needing cellular energy molecules pass directly through the phospholipids in the cell membrane large or charged molecules can move across the cell membrane simple diffusion facilitated diffusion both simple and facilitated diffusion

Explanation:

• Simple diffusion: Small, non - charged molecules (like \(CO_2\)) pass directly through the phospholipids in the cell membrane.
• Facilitated diffusion: Large or charged molecules (like \(K^+\) ions) pass through proteins in the cell membrane.
• Both: Both simple and facilitated diffusion are passive transport processes. So, molecules move from areas of high concentration to areas of low concentration and move across the cell membrane without needing cellular energy.

Answer:

• Simple diffusion: molecules pass directly through the phospholipids in the cell membrane
• Facilitated diffusion: molecules pass through proteins in the cell membrane; large or charged molecules can move across the cell membrane
• Both simple and facilitated diffusion: molecules move from areas of high concentration to areas of low concentration; molecules move across the cell membrane without needing cellular energy