Chapter 7.4 Flashcards
a type of diffusion that is passive and moves down the gradient
facilitated diffusion
a diffusion that requires no energy
facilitated diffusion
if this diffusion is moving against the gradient, it needs ATP
facilitated diffusion
uses ATP energy
active transport
all protains in active transport are what type of proteins
carrier proteins
the voltage across the membrane
membrane potential
increased by the change of pos/neg ions
membrane potential
favors passive transport
membrane potential
drives the diffusion of ions across the membrane
electrochemical gradient
what are the two combined forces of the electrochemical gradient
chemical and electrical force
ion concentration gradient
chemical force
membrane potential on the ion movement
electrical force
transport protein that generates voltage over the membrane
electrogenic pump
stores energy used for cellular work
electrogenic pump
active transport of colute the indirectly drives transport of another substance
cotransport