Learn: Diffusion, Osmosis, and Active Transport

Welcome!Today we'll learn about diffusion, osmosis, and active transport. These processes are essential for how substances move in and out of cells. Let's break it down step by step.

What is Diffusion?Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. It happens passively, meaning no energy is needed, and it’s how oxygen and carbon dioxide move in and out of cells.

What is Osmosis?Osmosis is a specific type of diffusion where water molecules move across a selectively permeable membrane. Water moves from an area of higher water potential to an area of lower water potential. This process is vital for maintaining cell hydration.

Active TransportActive Transport is the movement of substances against a concentration gradient, from low to high concentration. This process requires energy from ATP and is crucial for absorbing nutrients like minerals into plant roots.

Why are these processes important?Diffusion, osmosis, and active transport help cells take in nutrients, remove waste, and maintain balance with their surroundings. For example, oxygen enters cells by diffusion, and plant roots absorb minerals by active transport.

Review Time!Great work! You've learned about diffusion, osmosis, and active transport. Now let's test your understanding with a few questions.

Well done!You’ve now mastered diffusion, osmosis, and active transport. Keep practising to strengthen your understanding of these essential processes.