Understanding Diffusion in Cells

The video explains diffusion, a process where molecules move from high to low concentration. It uses examples like food coloring in water and the aroma of apple pie to illustrate diffusion. The importance of diffusion in cellular processes is highlighted, showing how substances move across cell membranes. The concept of selective permeability is also introduced, explaining how cell membranes allow certain molecules to pass through.

Why is diffusion important for cells?

What does it mean for a cell membrane to be selectively permeable?