define osmosis and diffusion. give one example of each.
Answers
Osmosis is a diffusion process. But osmosis is the diffusion of particles of solvent (liquid) from higher concentration of solute to lower concentration region, across a semipermeable membrane. Both processes are passive processes.
Examples : When a drop of color is put in water, the colored particles diffuse. Gas molecules diffuse in a room, if the container is opened.
Osmosis flow of water, fluids inside blood across cell membrane.
Answer:
OSMOSIS
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
Examples of Osmosis:- It include red blood cells swelling up when exposed to freshwater and plant root hairs taking up water. To see an easy demonstration of osmosis, soak gummy candies in water. The gel of the candies acts as a semipermeable membrane.
DIFFUSION
Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.
Examples of Diffusion:- Diffusion include the scent of perfume filling a whole room and the movement of small molecules across a cell membrane. One of the simplest demonstrations of diffusion is adding a drop of food coloring to water. Although other transport processes do occur, diffusion is the key player.