Which of the following correctly defines osmosis?

Osmosis is specifically the movement of water across a selectively permeable membrane. This process occurs when water molecules move from an area of lower solute concentration (higher water potential) to an area of higher solute concentration (lower water potential). This gradient creates a natural flow that seeks to equalize solute concentrations on both sides of the membrane.

Osmosis is crucial in biological systems as it helps maintain cell turgor pressure, influences cell shape, and is involved in the regulation of various physiological processes. Understanding this concept is essential for grasping how cells interact with their environments, particularly in terms of hydration and nutrient absorption.