Transport in Cells: Diffusion, Osmosis, and Active Transport

📚 Cells use diffusion, osmosis, and active transport to move substances.

🌱 Specialized exchange surfaces help facilitate efficient substance exchange.

🌬 Diffusion is the process of particles spreading from high to low concentration.

🔑 Diffusion is the movement of particles down the concentration gradient, allowing substances to pass into or out of cells.

🌬️ Gas exchange in the lungs and movement of carbon dioxide in plants are examples of diffusion.

🚶 Facilitated diffusion involves the use of carrier proteins to move glucose and ions across the membrane.

📚 The movement of water in and out of cells is called osmosis.

⚖️ Water moves from a dilute solution to a more concentrated solution.

🌱 Osmosis can cause plant cells to become turgid or animal cells to burst.

🔬 Cells use osmosis for the movement of gases and water.

⚡ Part 2 explains active transport, which is different from osmosis.