“Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.”
diffusion. the movement of particles from an area of high concentration to an area of low concentration.
Facilitated diffusion is the passive transport of molecules along their concentration gradient across a biological membrane with the help of special proteins. The proteins form channels in the membrane for molecules to pass through.
Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products....Importance of diffusion to living organisms.Substance required by cellWaste product of cellGlucoseCarbon dioxideOxygenUrea (made from excess amino acids)Amino acids
1 : the act of spreading or allowing to spread freely. 2 : the mixing of particles of liquids or gases so that they move from a region of high concentration to one of lower concentration. diffusion.
The process of movement of a substance (solid, liquid or gas) from the region of higher concentration to the region of lower concentration so as to spread uniformly is called diffusion. Biology. Science for Ninth Class - Part III - Biology. Standard IX.
Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the molecules. The difference in the concentration of a substance between two areas is called the concentration gradient .
Active Transport: molecules move across cell membranes by two major processes diffusion or active transport. Diffusion is the movement from a high concentration of molecules to a low concentration of molecules. Molecules can diffuse across membranes through the phospholipid bilayer or using a special protein.
In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
Common Examples of Diffusion. You can smell perfume because it diffuses into the air and makes its way into your nose. A teabag placed in a cup of hot water will diffuse into the water. Placing food coloring in a liquid will diffuse the color.In leaves oxygen from the leaf cells diffuse into the air.
Key concept: diffusion is a passive process (does not require additional energy) involving the net movement of a substance down its concentration gradient. The rate of diffusion can be increased by steepening the concentration gradient, increasing the temperature and increasing the surface area of the exchange surface.
Diffusion is when particles or objects move from an area of higher concentration to an area of lower concentration. Concentration refers to how much of a particular object or particle is in a given space.