1 In 2006, the city of New Meadows, ID issued 17 building permits. 2  All permits issued were for Single Family Homes. 3  Of those 17 permits, 1 were issued for single family homes and 16 were issued for multi-family homes.
In biological processes the direction an ion will move by diffusion or active transport across membrane is determined by the electrochemical gradient. In mitochondria and chloroplasts, proton gradients are used to generate a chemiosmotic potential that is also known as a proton motive force.
Concentration gradient is the process by which particles, which are sometimes called solutes, move through a solution or gas from an area of higher number of particles to an area of lower number of particles. The actual movement is called diffusion.