Up a Concentration Gradient

∞ generated and posted on 2016.08.25 ∞

Movement from a region of low substance density or prevalence to a region of high density or prevalence.

Movement up a concentration gradient is away from equilibrium and requires an input of energy.This is what active transport can mediate.

Up a concentration gradient can also be stated as movement that occurs "against" a concentration gradient. Contrast with down a concentration gradient.