What is osmosis?

Osmosis is defined as the movement of water across a selectively permeable membrane. This process occurs when there is a difference in water concentration on either side of the membrane. Water molecules move from an area of lower solute concentration (higher water concentration) to an area of higher solute concentration (lower water concentration) in an attempt to equalize solute concentrations on both sides. This movement is essential for maintaining cell turgor, nutrient transport, and overall homeostasis within biological systems.

The selective permeability of the membrane allows certain substances, specifically water in this case, to pass through while restricting others, which is crucial for cellular function.