What describes osmosis in biological systems?

Osmosis is specifically defined as the movement of water (the solvent) across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. This process occurs in response to solute concentration differences, seeking to equalize solute levels on both sides of the membrane. This fundamental biological process is crucial for cellular function and maintaining homeostasis within living organisms.

In biological systems, this movement allows cells to regulate their internal environment, and it plays a key role in various physiological processes, including nutrient absorption and fluid balance. The correct understanding of osmosis is essential for comprehending how cells interact with their environment and maintain their shape and function.