just wanted to help my nephew with some homework..help greatly appreciated=)
2006-10-07 10:57:39 · 3 answers · asked by matt s 1 in Science & Mathematics ➔ Biology
Diffusion depends on the concentration gradient between two substances. A substance will always travel from an area where it is more concentrated to an area where that substance is less concentrated.
Diffusion also depends on the membrane through which the substance is diffusing. In the case of most biological species, this membrane is called a phospholipid bilayer, and only small, non-polar, and uncharged molecules can pass through.
So, diffusion depends on:
concentration gradient of the substance,
size of molecule being diffused
polarity of molecule being diffused
charge of molecule being diffused
2006-10-07 12:20:42 · answer #1 · answered by lexibabe2468 2 · 0⤊ 0⤋
In general, the most important factor is the relative concentration of the substance that is being diffused. It will diffuse from an area of higher concentration of that substance to an area of lower concentration of the substance. The effect is to create an equilibrium between the 2 areas. Another factor could be any membranes or such that would inhibit the motion of particles
2006-10-07 18:00:50 · answer #2 · answered by Greg G 5 · 1⤊ 0⤋
Concentration of the solution and osmotic pressure.
2006-10-07 18:00:25 · answer #3 · answered by physandchemteach 7 · 0⤊ 0⤋