The net movement of molecules from an area of high concentration to an area of low concentration is called filtration.
diffusion.
osmosis.
osmotic
pressure.
The correct answer and explanation is:
The correct answer is diffusion.
Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration due to their random motion. This movement continues until the molecules are evenly distributed throughout the available space, achieving equilibrium.
This process is driven by the concentration gradient, meaning molecules naturally tend to spread out from areas where they are concentrated to areas where they are less concentrated. The key factor in diffusion is the kinetic energy of the molecules; the higher the temperature, the faster the molecules move, increasing the rate of diffusion. Diffusion occurs in gases, liquids, and even solids, although it is most commonly observed in liquids and gases.
Diffusion is a passive process, meaning it does not require energy from the cell or organism to occur. The molecules move on their own, driven purely by the concentration gradient. For example, when you open a perfume bottle, the fragrance molecules diffuse into the air, gradually spreading across the room.
Filtration, on the other hand, is a process where a solvent and solute are forced through a filter to separate particles based on size, while osmosis is a specific type of diffusion that involves the movement of water across a semipermeable membrane. Osmotic pressure refers to the pressure exerted by a solvent in osmosis, which helps determine the flow of water across the membrane.
Understanding diffusion is essential in biology and chemistry, as it explains how substances like oxygen and carbon dioxide move in and out of cells or how nutrients are transported in plants and animals.