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There is a direct relationship between the voltage gradient of an electric field and the separation of the charges. Higher voltage gradients will separate charges farther.
Diffusion is the movement of particles from an area of high concentration to an area of a lower concentration down a concentration gradient.
Because the concentration is going up so much energy is needed to do this. If the cell was going from a high concentration to a low, no energy is needed because it is already at a high concentration and its going lower you wouldn't need any energy to go lower at a high stance
The steeper the gradient, the higher the velocity of flow.
Density gradient is a spatial viration in density over an area
concentration gradient
The gradient can be calculated by comparing the solute particles from one solution with another. Distance determines the gradient levels within the solution.
Diffusion
Convection is the movement of particles due to a gradient of energy. Heat energy is thus transfered by the moving particles.
passive transport
In biology, diffusion is the passive movement of molecules or particles along a concentration gradient, or from regions of higher to regions of lower concentration. Diffusion is the free movement of particles in a liquid or gas down a concentration gradient.
Going with the concentration gradient is basically the process of diffusion. Molecules going from a low concentration to a high concentration would be going with the concentration gradient. Going against the concentration gradient would be the movement of particles from a high concentration to a low concentration
Particles move from where they are in high concentration to where they are in low concentration.
passive diffusion requires absolutely nothing, no energy either, the particles simply flow from a high concentration gradient to a low concentration gradient. Active transport however require carrier proteins to allow the particles through the cell membrane
Concentration Gradient
There is a direct relationship between the voltage gradient of an electric field and the separation of the charges. Higher voltage gradients will separate charges farther.
For diffusion to occur there needs to be a concentration gradient. Which means that the concentrations on the two sides must be different. In diffusion the particles flow from high concentration to low concentration.