adjective inimical. Quotations. Pay attention to your enemies, for they are the first to discover your mistakes [Antisthenes]. You can discover what your enemy fears most by observing the means he uses to frighten you [Eric Hoffer The Passionate State of Mind ]. A man cannot be too careful in the choice of his enemies [Oscar Wilde Lady Windermere's Fan ].
A diffusion gradient, or concentration gradient, exists when an area of higher concentration is in contact with an area of lower concentration. When substances are in contact, particles may flow between them.he particles of a substance are in continuous, random motion in every direction, but there is a net flow of particles down the diffusion gradient or, in other words, from the area of higher concentration to the area of lower concentration.
The difference between simple diffusion and facilitated diffusion may as well be drawn in reference to the change in the concentration of gradients where the molecules move from and into. Simple diffusion involves the movement of particles or molecules from an area of higher concentration to lower concentration. Naturally, the particles can penetrate into gradients with lesser particles in order to attain balance between the gradients. Osmosis is a perfect example for this molecular activity.