Learn: Diffusion and Osmosis

Welcome!Today we'll learn about diffusion and osmosis. These are important processes that help molecules move in and out of cells. Let's explore how they work step by step!

What is Diffusion?Diffusion is the movement of particles from an area of high concentration to an area of low concentration. It happens naturally and does not require energy. Diffusion is vital for transporting substances like oxygen and carbon dioxide in and out of cells.

What is Osmosis?Osmosis is the movement of water molecules across a selectively permeable membrane from an area of high water potential to an area of low water potential. This process helps cells maintain balance and hydration.

How Diffusion and Osmosis Are DifferentDiffusion moves particles like oxygen and carbon dioxide, while osmosis specifically moves water molecules. Diffusion happens in any part of the cell, whereas osmosis occurs across a selectively permeable membrane.

Why Diffusion and Osmosis MatterDiffusion is essential for breathing, as oxygen enters cells and carbon dioxide exits. Osmosis keeps cells hydrated and ensures water balance. Both processes are vital for cell survival and proper function.

Review Time!Great work! You've learned about diffusion and osmosis. Let's test your understanding with a few final questions.

Congratulations!You've completed the lesson on diffusion and osmosis. These processes are essential for understanding how cells function and stay alive. Well done!