Transport in Cells: Diffusion, Osmosis, and Active Transport
Learn how cells transport substances through diffusion, osmosis, and active transport for efficient exchange with their environment.
00:00:14 Discover how cells transport substances through diffusion, osmosis, and active transport for efficient exchange with their environment. Explore the importance of concentration gradients.
📚 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.
00:01:19 Learn about how particles move down the concentration gradient through diffusion and osmosis, and how these processes are essential for cellular function.
🔑 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.
00:02:25 This video explains the process of diffusion and osmosis in cells, focusing on the movement of water molecules across a partially permeable 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.
00:03:29 Learn about the movement of gases and water in cells through osmosis, and discover the concept of active transport. Watch part 2 for more on active transport.
🔬 Cells use osmosis for the movement of gases and water.
⚡ Part 2 explains active transport, which is different from osmosis.
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