Explain the process of diffusion and osmosis in cells.

Diffusion and osmosis are passive transport processes that help in the movement of substances across the cell membrane without the use of energy.

Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. For example, oxygen enters cells and carbon dioxide leaves cells through diffusion.

Osmosis is a special type of diffusion that involves the movement of water across a selectively permeable membrane from a region of higher water concentration (dilute solution) to a region of lower water concentration (concentrated solution).

Both processes are essential for maintaining cellular balance. Diffusion helps in the exchange of gases and nutrients, while osmosis regulates water balance and maintains cell shape.

Thus, diffusion and osmosis are fundamental processes that support normal cell function and survival.