Midnight, Texas â SERIES PREMIERE Based on Charlaine Harrisâ book series by the same name, âMidnight, Texasââ follows the lives of the inhabitants of a small town where the concept of normal is relative. A haven for vampires, witches, psychics, hit men and others with extraordinary backgrounds, Midnight gives outsiders a place to belong.
Facilitated diffusion. Definition. noun. Transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by means of a carrier molecule. Since the substances move along the direction of their concentration gradients, energy is not required.
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the s â¦ pontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.