<P> Active transport is the movement of molecules across a ( natemembrane ) ) from a region of their lower concentration to a region of their higher concentration -- in the direction against some gradient or other obstructing factor ( often a concentration gradient ) . </P>
<P> Active transport is the movement of molecules across a ( natemembrane ) ) from a region of their lower concentration to a region of their higher concentration -- in the direction against some gradient or other obstructing factor ( often a concentration gradient ) . </P>
where does active transport occur in the membrane
where does active transport occur in the membrane
natemembrane
natemembrane